Season 4 - Episode Guide

Luffy and company come across a mysterious pirate ship after trying to escape a giant wave. Soon, they arrive on an island inhabited by strange animals. Going Merry is captured by the Foxy Pirate crew.

After Tonjit re-unites with his horse, they are soon attacked by Captain Foxy and his subordinates, who challenge Luffy in a Davy Back Fight, a contest of pirates where the stakes are members of the crew.

The first round of Davy Back Fight involves a race around the island with tiny boats. Zoro's and Chopper's boat is eliminated.

With only Luffy, Nami, and Porche's boat remaining, it's an all out war to the goal, but after Foxy exposes his Devil Fruit powers, Porche wins and takes Tony Tony Chopper from Luffy. The second round prepares to start.

Without Chopper, Sanji and Zoro must face the Foxy Pirates in a ball game, but are hampered by their blatant cheating and the crooked referee.

The bickering rivals Sanji and Zoro manage to overcome the opposing team by working together. Luffy chooses Tonjit's horse, Shelly over Chopper.

The Straw Hats face Foxy a race around a giant ring on roller skates.

The Straw Hat Pirates stop Foxy and his dirty tricks and win the race. 

With Luffy's victory, he takes Chopper back, but foolishly accepts another challenge by Foxy.

Foxy decides to take Robin from Luffy this time because of her Devil Fruit ability. The next match is a race to the top of the island.

With Chopper gone again from Luffy's crew, Luffy and Foxy face off in the final game: a battle of brawn aboard Foxy's ship.

Luffy continues to battle Foxy with the odds not in his favor, and the fight continues inside Foxy's ship.

Luffy manages to finally defeat Foxy by using his ability against him. After dismissing his new crewmembers, the Straw Hats leave in search for a shipwright.

A mysterious figure appears during the night and steals the memories of the crew. In the morning, Robin is the only one who remembers the Straw Hats adventures together. Her attempts to keep the crew together fail as Nami and Zoro go separate ways.

Robin suggests that only those who were sleeping lost their memories. Luffy and the others then remember seeing the mysterious boy who played some kind of flute. Later that night, they discover the boy outside and Luffy tries to fight him. At the last second, he proclaims his memory has returned.

During the night, Usopp, Chopper, and Sanji question what brought them to the Going Merry. In the morning, Usopp builds them a raft and they sail to the island where they meet Nami again. Meanwhile, the boy sets his sights on Zoro.

On their way to "The Palace of the Sea God" Robin's group meets an entranced Zoro. It looks like Zoro wants to fight so Luffy urges the others to keep going without him. They apprehend the kid but the whistle was what was really stealing their memories. Zoro returns, still entranced, but Luffy's nowhere to be seen.

Luffy returns and knocks some sense into Zoro. Cornered, the sea horse spreads illusions of the people in their memories to distract them. It steals their complete memories and claims that it has become a Sennenryu. Luffy defeats it and returns all the memories but the townspeople are convinced they are the memory stealers.

Luffy rescues Foxy, Hamburg, and Porche from a storm at sea. When they reunite with the Sexy Foxy ship, they find it captained by somebody new. Foxy accepts a Davy Back Fight in order to regain his ship and crew. Donning the afro once again, Luffy vows to defeat the captain.

Once Foxy wins back his crew, he captures the Straw Hats. Nami and Luffy fight Foxy and although he's defeated, his crew accepts him back. Later, they sail to an island where they meet someone Robin knows: a Marine named Aokiji.

The man they met, Marine High Admiral Aokiji, appears to be incredibly lazy. He first displays his Devil's Fruit ability by freezing the sea so some deserted people can get off the island. Unfortunately, he's determined to catch Robin. Luffy, Sanji, and Zoro attack but they seem to be no match.

Luffy insists on fighting Aokiji alone and risks it all so the crew can save the frozen Robin. 

After the Going Merry narrowly escapes being hit by a Sea Train, the crew meets an old woman, Kokoro, and her granddaughter, Chimney. Kokoro gives Luffy a map to Water 7.

Luffy, Nami, and Usopp get strange greetings from the residents and they get to experience the roller coaster-like channels of Water 7. Luffy's group finds out that some pirates had been beaten at the hands of some powerful craftsmen; the Galley La Company. Chopper loses Robin and some strange new people threaten Zoro back on the ship.

The people who attacked Zoro reveal themselves to be the feared "Franky Family", though they are no match for Zoro. Luffy's group has the gold exchanged for cash. After, they meet a man who resembles Usopp, Galley La's carpenter employment foreman, Kaku. Two of the suitcases of money are stolen by the Franky Family.

Paulie makes his debut when he retrieves Usopp's stolen money as he runs from debt collectors. Kalifa shows Luffy, Nami, and Usopp around Dock No.1 and tells them how Iceburg founded the Galley La Company. Kaku returns from the Going Merry and tells them that their keel is irreparably damaged.

Luffy refuses to believe that Galley La cannot repair the Going Merry. The two soon realize that not only is Usopp missing now, the two brief cases that were returned to them are empty! Nami decides to head to Franky House and finds Usopp on the way in a pitiful state. As she heads back to the ship for help, Usopp goes to the Franky House himself.

Luffy, Sanji, Zoro, and Chopper follow Usopp's bloody trail to the Franky House where they find him passed out in front. The four of them challenge the Franky Family only to find out that their real target, Franky himself, is gone and has taken the money with him.

Once they are back on the ship, Luffy has to finally tell Usopp that the Going Merry can no longer be repaired and that they've chosen to get a new ship without him. Usopp believes that Luffy has abandoned the dignity of their ship and says he's leaving the crew. That night, he challenges Luffy to a duel.

Usopp fights Luffy in order to decide who keeps the Going Merry; he fights harder than he's ever fought before. Luffy actually seems to pose no threat but all the while, he's remembering what great friends they used to be, sailing together on the same ship.

The Straw Hats get themselves a hotel room. Nami finds the crew on the roof with urgent news; Iceburg has been shot. As the Galley La Company frantically search for answers, Nami and Luffy decide to check on his condition - only to be met by closed gates. Franky appears then to exact his revenge - with style.

In the streets outside of the hospital, Luffy fights Franky. Inside, Iceburg recalls seeing Nico Robin and another tall man before he was shot. The Galley La company run outside and stop Franky and Luffy and tell them that they suspect the Straw Hat Pirates of the crime.

The Galley La Company continues to fight Luffy and Franky is enraged that they've stolen his opponent. An incredibly high tide called the "Aqua Laguna" is coming and Chopper and Sanji rush to warn Usopp. Luffy raises some chaos in order to meet with Iceburg and he demands to know what's happening. Iceburg says he wants to see Robin one more time.

In a bar, Franky talks with Kokoro about her theory on who shot Iceburg. The rumors she speaks of seem to have some truth as we see Robin meeting with someone from an organization called CP9. While the crew hide from angry residents, Sanji and Chopper discover Robin and she tells them what they've feared: she's responsible and she wants to part ways.

Chopper reunites with the others without Sanji and they discuss what's happened. Luffy decides that in order to know the full truth, they must catch Robin. Usopp attempts to repair the ship enough to withstand the Aqua Laguna and the Straw Hats make their way to the Galley La Company.

The Straw Hats (still missing Sanji) rush to Galley La where Robin and CP9 begin a raid. In Iceburg's room, Robin and the mysterious man Iceburg saw before, tell him that they've purposely placed the blame on the pirates. Their true aim is the blueprints he would've passed down to Paulie. Luffy separates from his group.

Robin speaks with Iceburg inside his room still. We already know that Robin can read the poneglyphs - and it seems Iceburg is the one with the blueprints to the ultimate weapon, Pluton. The true enemies are revealed to be Iceburg's own allies. Elsewhere, Luffy is tied up with Paulie after Paulie tells members of CP9 that his blueprints are fake.

Lucci tells Iceburg their hypothesis and has Kaku check his pulse to tell if the things he tells him are true. They suspect that Iceburg's friend from the past, Cutty Flam, is really Franky and it's revealed to be true. Therefore, Franky has the real blueprints. The Straw Hat Pirates and Paulie break into the room where they find Iceburg and CP9.

Luffy and the others request that Robin comes back to the crew. She refuses and tells them that she cannot accomplish her "wish" if she were to stay with them. Robin turns to leave and CP9 try to hold the pirates back. Robin successfully escapes and Lucci shows those remaining his "transformation".

Lucci's transformation is a result of a Devil's Fruit; a Zoan Type leopard. He quickly disposes of the crew and CP9 tie up Paulie and Iceburg, leaving them alone as the building slowly burns down around them. In Franky's underground hideout, Usopp tells him his story and Franky is finally touched. In return, Franky tells him a little about Tom's contributions to Water 7.

Usopp believes that the person who repaired the Going Merry in Skypeia was really the Going Merry itself. Franky says that the ship was inhabited by a spirit who enters ships who are dearly cared for. The spirit repaired their ship just enough for them to reach the next island. The doorbell rings from the sea side and CP9 enter.

CP9 discover Franky's hidden room and he fears they'll trample his memories. A long flashback ensues, covering Franky's past in Tom's Workers and how he and Iceburg helped create the Sea Train.

(Franky's flashback) Spandam, a CP5 representative, was determined to get Tom proven guilty in his trial so he could get the blueprints. As Franky walked into the town, people from the government began to attack with the battleships he had personally constructed. Tom and Iceburg run to their shipyard where they are attacked by two ships which also destroy the others. Iceburg tells Franky that he has to take responsibility or he will never forgive him.

(Franky's flashback) Franky said that if a ship of his were to be used as a weapon, then it's no longer one of his ships. That enraged Tom and he punched Franky for the first time, telling him he had to take pride in the ships he created. He then told the judge that he would accept the punishment for both his previous crime and the recent attack. Franky tried to stop the train to Enies Lobby with his bare hands.

Chopper escapes the burning building with Paulie and Iceburg on his back and collapses outside. Iceburg makes it clear to Nami that Robin wanted to recover the blueprints and to do that, she wanted her companions to leave the island without her. Nami rushes to tell Chopper so they can go looking for the rest of the crew. Elsewhere, the foremen let go of the Going Merry so she would be destroyed at sea.

Paulie helps clear the name of the Straw Hats but does not tell the mob everything he knows. He gets the mob to follow Chopper so they can search for the rest of the crew. Nami goes her own way so she can rush to the Sea Train. As Nami nears the station, Sanji, ahead of her, approaches the train.

Nami and the conductors are rescued by Paulie when the Aqua Laguna floods the main station. A man hands Nami a letter he found from Sanji. It informs her that Usopp, Franky, and he are on board the train that had just departed. On board, he storms the cars. High up in the city, Nami speaks with Kokoro and spots Luffy, stuck in between two buildings, in the back streets where the Aqua Laguna will hit first.

Nami finally reaches Luffy and tells him that he needs to hurry before Robin reaches Enies Lobby. Chopper finds Zoro and hands him the Sandai Kitetsu so he can escape the chimney. Luffy pushes apart the buildings he was stuck between and Paulie grabs them all so they can escape the Aqua Laguna's massive wave.

Sanji fights his way through another train car and finds Usopp and Franky. Seeing how determined Luffy is to save Robin, Kokoro and Iceburg lends the Straw Hat crew the use of another sea train, Rocket Man. The Franky Family shows up, pleading with Luffy to let them join them because they'll do anything for their leader.

The Rocket Man finally makes it out to sea. As the train connects with the tracks, Luffy has to rescue Chimney before she's thrown off by the wind. In the meantime, Iceburg has a flashback about when he finally met Franky again in Water 7. With Luffy and Chimney safe in the train, Paulie tells his fellow carpenters who the real culprits were. The Straw Hats, Franky Family, and Galley La Company form an alliance.

Luffy and Zoro perform a move that acts similar to a cannon and blasts a hole through the wall of the tidal wave ahead of them, opening up a channel for them to pass through. They miraculously pass through unscathed and the passengers rejoice. Sanji contacts the rest of the crew and fills them in on his current situation. Usopp separates from them but later, when Sanji and Franky are spotted, a man named Sogeking comes to their rescue.

Sogeking makes his grand entrance. Franky and Sanji aren't fooled by his costume but they try to humor him. They devise a plan first, then detach the last two cars and fight their way through the rest. Back in the Rocket Man, Luffy, Zoro, Nami, and Chopper get an outfit change; Nami shows off the weapon Usopp upgraded for her while he was still with them.

Kalifa updates the CP9 on the situation with Franky, Sanji, and Usopp. Sanji tells Franky and Usopp to go on without him so he can fight Wanze and his "Ramen Kenpo". Franky begins to fight Nero, CP9's "Weasel", and Sogeking meets with Robin.

Franky's fight with Nero continues. Nero discovers that Franky's weak spot is his back, so Franky lies down flat so he cannot get to it. Nero demands that he fight seriously, so Franky gets up to perform his "Centaur" form. Sogeking talks with Robin and tells her that the crew knows about her reasons for leaving. Those on the Rocket Man encounter the discarded cars and Zoro slices them so they can pass.

Zoro clashes with "Ship Cutter" T-Bone. The fight is short and Zoro joins the crew again in the Rocket Man. On the Puffing Tom, Sanji beats Wanze beautiful, though Wanze thinks he's ruined his face. Franky finally gains the upper hand against Nero and defeats him. After beating their respective opponents, Franky and Sanji stand to fight against the other CP9.

After hiding under Robin's cloak for a few episodes, Sogeking finally shows himself. They stumble into the room with the CP9 and meet with Sanji and Franky. Sogeking produces a smokescreen. The four head into another car, detach it, and escape. It's not long before Blueno pulls their car back, though. Franky knocks down the wall so they can escape but ends up on the enemy car. Blueno opens a door then back in the Straw Hat car.

Robin willingly follows Blueno into his improvised door and Sogeking and Sanji are left alone. For a while, Blueno explains a little of Robin's past involving the Buster Call. Back at the Rocket Man, Yokuzuna the frog jumps onto the front of the train, knocking them from the rails. After Kokoro speaks with him, he joins the group. The CP9, Franky, and Robin finally reach Enies Lobby and disembark.

Luffy and the others finally catch up to Sanji, Usopp, and the rest of the Franky Family as they near Enies Lobby. Paulie sits down with the group and talks about their plan. Luffy does not bother to follow the plan, and slingshots himself beyond the gates before the train stops.

Spandam is informed that an intruder has entered the area. Luffy confuses the Marines guarding the entrance gate by manipulating one of their own comrades to fight against them. The rest of Luffy's group come in after he already slingshot himself over the gates. Because they aren't all quite as limber as Luffy, they have to band together to get inside. Giant Gate Keepers Kaashii and Oimo come to fight the Franky Family.

In a David and Goliath turn around, the Franky Family and Galley La bring down Kaashi. Spandam receives an incomplete report about Luffy and believes that he's no longer a threat. The Cipher Pol 9 members meet with Spandam and it looks more like a comedy routine than a briefing.

While Robin and Franky are brought before Spandam, Luffy blasts his way through another wave of marines. In order to get past the gate, Zoro orders that they just keep going. Yokozuna the frog bends down the outside gates and they fly over the gate inside. Back on the ground, Paulie is stabbed by someone from "The Law's Watch Dogs", the Houbantai. The Rocket Man flies over the gate and the point of the train smashes into Oimo's back, knocking him out cold.

As the title of the episode suggests, the Straw Hats enter an all-out war to catch up with Luffy, albeit a humorous one; Sanji and Zoro bicker over who's more dangerous, Nami injures her own comrades with her improved weapon, and Sogeking fails at being a decoy. The Houbantai show up to stop them and the foremen of Galley La stay behind to fight.

Robin questions why Spandam was given rights to the Buster Call. The CP9 plan to kill the Straw Hats because they violated the original arrangement; that they entered Enies Lobby after leaving Water 7. Back in the fray, Franky's Giant Bulls talk with Chopper. He translates and they notice that Sogeking is not with them anymore. Elsewhere, Blueno appears before Luffy.

For a while, Sogeking talks with Oimo about how he and Kaashi came to support the marines and hears a familiar story. The majority of the episode is a Little Garden flashback. Soddom the Giant Bull takes severe damage and urges those riding him to run before he collapses. Back at the fight between Blueno and Luffy, Luffy throws the first punch to initiate the battle.

Kokoro contacts the Straw Hats by way of Nami's baby den den mushi. The Franky family decide to lower the inner bridge so the others can enter the courthouse first. After Gomorrah is blinded, Sogeking arrives with the giants as back up. Shortly after, Gomorrah tells those riding him to hold on, as he plans to take them to the courthouse. Inside, Spandam gives Kaku and Kalifa Devil's Fruits.

Although Gomorrah was blinded, he continues to rush ahead. Spandam receives word of their progress right as the Straw Hats reach the gate. Zoro slices right through it and while up top, Luffy activates "Gear Second".

The Straw Hats enter and Yokozuna the frog and the Franky Family stay behind at the door to watch their backs. The three-headed judge attempts to stop them but the Franky Family holds him off. Elsewhere, Luffy's Gear Second is put into action, ultimately defeating Blueno without having to activate Gear Third.

Franky helps Robin escape from their chains and they make it outside to see Luffy. Luffy wants to come over to rescue Robin but she tells him to stay, that she only wants to die. Below, as Yokozuna falls, the giants come to cover. All the Straw hats arrive on the roof, and ask Robin to return.

20 years ago, on the West Blue island of Ohara, Nico Robin becomes an archaeologist, but Professor Clover forbids her from researching the Void Century. She meets the giant Saul who has washed up on the beach. Meanwhile, Spandine is just off the coast of Ohara.

Robin continues talking with Saul, and Saul is shocked to learn that Robin is Nico Olvia's daughter and that he is on Ohara. Olvia returns to Ohara to warn the other scholars that the World Government's forces are headed there. She decides not to reveal herself to Robin, not wanting her daughter to be branded a criminal because of her. CP9 arrives on the island, capturing Olvia and rounding up the scholars.

Clover reveals that the Poneglyphs were most likely carved by an ancient country in order to prevent their enemy, the World Government, from completely erasing their history, but is shot by Spandine, who then activates the Golden Den Den Mushi. Robin recognizes Olvia as her mother, but Olvia denies it, causing Robin to admit that she is an archaeologist and can read the Poneglyphs. The Buster Call commences, and, after a tearful reunion with her daughter, Olvia entrusts Saul with Robin's care.

Robin finishes her story and says that while she considers the Straw Hats her friends, she believes that one day, they will be no longer able to protect her from her pursuers, and betray her like the others did. After Spandam points out that taking in Robin means declaring war on the entire world, Luffy tells Sogeking to shoot the World Government flag. Sogeking uses his Sure-kill Firebird Star to burn up the flag, declaring war on the world for Robin's sake. Robin, moved by the depth of Luffy's action, cries out that she wants to live and return to the sea with Luffy, and Luffy and the others prepare to do battle with CP9 and save Robin.

Luffy's backstory.

Zoro and Usopp's backstories.

Nami's backstory.

The backstories to Sanji and Chopper.

The reasons for Nico Robin's recent actions, as well as a summary of her back story.

After Robin decides she wants to live, the Straw Hats wait for the bridge so they can battle CP9. Franky reveals that the Pluton blueprints are with him and burns them in front of Spandam, saying that he's betting it all on the Straw hats. With unexpected help from Kokoro, Franky and the Straw Hats make a dramatic entrance into the Tower of Justice.

The Straw Hats and Franky made it to the Tower of Justice. However, Fukurou reveals that one of the CP9 members has the key to Robin's handcuffs, and will not say which, so the Straw Hats must fight every member to find the key. Meanwhile, Chimney follows Spandam and Lucci down a secret corridor.

Zoro begins his intense battle with Kaku, and Sogeking fails to retrieve the key from a sleeping Jabra. Kaku reveals his Devil Fruit power and causes the floor to collapse in the process. Meanwhile, Luffy searches high and low in the Tower of Justice, and attempts to cross the whirlpools to the Bridge of Hesitation.

Nami barely escapes from Kumadori, stealing his key in the process. Kaku utilizes his new body to cut the Tower of Justice in half, and Sanji attempts to get the key from Kalifa.

Chimney and Gombe show Luffy the secret passage that leads to Robin; Franky puts on a display of raw punching power.

Franky's brawl spills into the ocean; Usopp and Sanji attempt to overcome their handcuffs by outsmarting their opponents.

After Chopper's first Rumble ball wears off and his second fails he is forced to break a promise to Dr. Kureha. He uses his third Rumble Ball in a row and transform into his most powerful and deadly form: Monster Point. 

A madcap adventure starring the Straw Hats; A camel that eats lottery tickets.

The madcap throwback continues as Luffy and the gang competes for a priceless treasure hidden inside a tasty snack.

Nami battles a bathing beauty and her lethal bubbles; Chopper unleashes his inner beast; Luffy inches even closer to catching up with Robin.

Spandam accidentally invokes the Buster Call on Enies Lobby with the Golden Den Den Mushi. He also accidentally informs everyone on the island of the coming destruction. 

Zoro uses Usopp as a decoy in his beast battle; Nami discovers a secret.

Franky and Nami form a plan to stop Choppers rampage; Usopp and Zoro spend time apart.

Usopp's life is saved by a familiar foot; Luffy struggles to hit a formidable foe.

Sanji uses the Devil's leg to even the odds.

The battle between Zoro and Kaku rages on. Meanwhile Franky finally reaches Luffy. 

Zoro unleashes a demonic nine-sword fighting style on his giraffe opponent. Meanwhile Luffy activates Gear Second in his fight against Rob Lucci, who transforms into his half-leopard form. 

Robin finds out that Spandam is the son of Spandine, the man who invoked the buster call on Ohara. Sogeking stops Spandam with his Kabuto and saves Robin, while Franky releases her Seastone handcuffs. Now free to use her Devil Fruit powers again, Robin finally releases her anger on Spandam with her Seis Fleur Slap. However, the Buster Call on Enies Lobby has just begun.

Luffy's battle with Lucci reveals the powerful secrets of the rubber man's second gear; Spandam's thoughtless Buster Call begins.

An ancient tree is stolen by a madman with the power to freeze time.

While Sanji and the others are trapped in a tunnel with water pouring in, Luffy activates Gear Third in the battle against Lucci.

The past of Rob Lucci is told by the commander of the Marines.

Robin rejoins the fight; the Straw Hats struggle to survive underwater.

Thanks to a Mermaid the Straw Hats make it safely to the ship. However, Luffy is still fighting Lucci in the first tower of the Bridge of Hesitation.

Luffy pushes his body to the breaking point during his battle with Rob Lucci; the rest of the Straw Hats try to fight off a fleet of Marines.

Usopp's desperate pleas inspire the rubber-man to mount one final attack on Rob Lucci.

The Straw Hats must throw themselves into the sea to survive.

With the arrival of Going Merry, the Straw Hats make their great escape from Enies Lobby. Thanks to Sanji and his clever strategy of closing the Gates of Justice, the Marines are unable to get a clear shot at Merry. 

The Going Merry cracks and breaks under her own weight, and the crew say their own farewells as they give the ship a Viking funeral, finally putting her to rest. As she goes up in flames, Merry apologizes and then thanks the Staw Hats for treasuring her for so long. 

The Straw Hats get some much needed rest; Franky makes a big announcement; Vice Admiral Garp tracks down his grandson.

Luffy's friends learn that Luffy's grandfather is a marine hero, Luffy learns who his father is.

Luffy has the chance to catch up on things with his old friend Coby; Nami does some serious snooping around.

Shanks visits Whitebeard with a serious request; Franky and Iceberg begin construction on a ship.

Luffy and Chopper risk their lives to help a heartbroken young girl track down her long lost pet.

Zoro's day is ruined by a group of orphans as he searches for a new sword.

While out shopping with Chimney, Sanji is persuaded by her to go to a good cook whom which she calls grandpa, the old man teaches Sanji the reason why his food tastes so good, salt which is produced by the Aqua Laguna.

Franky and Iceberg stay up all night, trying to see who can do the most work to finish the new ship for the Straw Hats.

Luffy and the rest of the Staw Hats prepare to set sail on their newly completed ship; Franky discovers that he now is wanted by the government.

The Straw Hats press Franky to leave with them.

While awaiting the return of Usopp, Luffy and the Straw Hats face a barrage of cannon fire by the marines.

The Straw Hats choose a name for their new ship, the crew has a chance to show off the ship during battle with the marines.

Blackbeard and Ace match their devil fruit powers against each other.

It is an abridged movie retelling of the Alabasta Arc.

The Straw Hat Pirates travel to Alabasta, the desert island and home of Nefertari Vivi. They find the country in the middle of a revolution. Crocodile, the country's hero, secretly used his criminal organization Baroque Works, to undermine the citizens trust in Cobra, Vivi's father and head of the Kingdom of Sand, in order to seize the throne and the country's hidden secret for himself. The crew now has to cross the desert, stop the revolution, save thousands of lives from the Baroque Works hidden bombers, and most of all, defeat Crocodile, one of the mighty Shichibukai.

The Straw Hats arrive on Mecha Island, which is rumoured to contain an enormous treasure. The crew teams up with the island's chief and inventor named Ratchet to solve the mystery, but Ratchet has other plans for the island in mind.

Unlike the other specials, this story takes place in an alternate reality version of 19th century Japan (in "The Grand Jipangu" (グランドジパング Gurando Jipangu?), an alternate version of The Grand Line as opposed to simply being hour-long filler episodes.

The story is divided into two halves: in the first, Buggy the Clown makes trouble in the town where Detective Luffy is stationed, and in the second a mysterious girl named Vivi appears. These stories feature cameos from several minor characters in the normal series.

Surprisingly the "Oyabun" (Boss) specials did not stop there as five more specials were made following the first one, mostly as Christmas and New Years specials as well as fillers once in awhile.

The Straw Hats decide to take a break from their adventures and arrive at a resort island, where they participate in a series of challenges. But a dark secret lurks on the island and the crew begins to argue and split up. Can Luffy overcome the crushing despair and hopelessness of being alone and bring the crew back together?