Season 21 - Episode Guide

One night, Ash has a dream and the next day, Ash finds the Pokemon he encountered in his dream and is determined to keep his promise.

Looking after Nebby, Ash and his classmates realize that Nebby can teleport them to places, causing Ash and Pikachu to get lost.

Ash and his classmates visit Aether Paradise run by Lillie's mother Lusamine. Whilst there, a Ditto escapes and the gang have to find it among the other Pokémon.

Whilst giving his Pokémon a bath, Ash thinks about Gladion which results in Nebby teleporting him, Pikachu and Lycanroc to his location.

Ash's classmates attend a sleepover at Kukui's house where they are joined by Professor Burnet where Lillie starts thinking about her mother.

Having seen Gladion and Type: Null again, memories are starting to return to Lillie and have caused a relapse of her fear of touching Pokémon, being unable to touch Snowy. Lillie decides to travel around Alola with Ash & Nebby to revisit areas in order to get all her memories back. Eventually, they arrive at the Aether Paradise where Faba is plotting to abduct her to prevent her from remembering what happened to her as a child. Will she remember?

With her memories awakened, Lillie has overcome her fears of touching Pokémon, so is enjoying hugging & playing with the various Pokémon at the Pokémon School. However, since her memories revealed Faba to have been at fault, Faba is now reacting and is plotting to kidnap Nebby and use it to open Ultra Wormholes to summon the Ultra Beasts. Will he be successful?

With Lusamine having been taken into Ultra Space by Nihilego, Nebby having evolved into Cosmoem and unable to move, and Lillie encountering her childhood fears, Lillie & Gladion decide to head to Poni Island in order to find a way to get through to Ultra Space to save their mother. Meanwhile, Ash consults with Hala after learning that Lillie has run away. Will he be able to help?

Ash & co. have come to the Altar of the Sunne in the hope of summoning Solgaleo to go to Ultra Space to rescue Lusamine. However, when they reach the altar, they find Tapu Koko, Tapu Lele, Tapu Bulu and Tapu Fini who seem to intend to help. After doing a ceremony, Nebby starts to glow once more and evolves into Solgaleo. Will it be able to help out?

Ash & co. have gone to Ultra Space on Solgaleo in order to find Lusamine, however to their surprise they find Lusamine has been enveloped by Nihilego and have to face off against her and the other Ultra Beasts, but with Lusamine's Pokémon strengthened by the Ultra Energy, they face a tougher battle than they had initially thought.

Ash has caught up to Lusamine with Solgaleo, but things are looking tense for his friends who are suffering at the hands of the Ultra Energy powered Pokémon owned by Lusamine. To top it off, with Lusamine having been fused with Nihilego, it's hard for Ash to rescue her as she attacks him. Lillie feels powerless to help her mother, but Ash soon discovers the ability to use a new move with Pikachu. Will they rescue Lusamine?

Ash & co. have returned to Alola from Ultra Space, having rescued Lusamine from the grasp of Nihilego. However, soon after, Solgaleo disappears and, when doing so, Kukui approaches Ash saying he has something important to tell him. Will Ash be able to find Solgaleo and what is Professor Kukui going to tell Ash?

Ash & co. have started to take great interest in Samson Oak's Komala. Learning that it's always asleep and that it can even eat and battle while asleep, the gang are curious over how it and Samson Oak met. However, before too long, Jigglypuff soon arrives in the school and battles with Komala. Will Komala be able to defeat Jigglypuff?

Rotom Dex is one of Ash's companions and is a Rotom in a Pokédex. After being hit by Pikachu's electricity, it is pushed out of the Pokédex and goes into Kukui's Washing Machine. It tries to go back to being in the Pokédex, but keeps failing and changes to all the different forms. Will Rotom be able to return to the Pokédex?

After a shopping trip, James' Mareanie encounters a Mareanie it used to have unrequieted love for. The other Mareanie proclaims its love for James' Mareanie, but James' Mareanie dismisses it as it likes James now. Due to this, James and the other Mareanie battle. Will James be able to keep Mareanie?

Lana's sisters return from the forest, with a tale that they were saved by a large mysterious Pokémon. This brings memories back to Lana and Mallow of a time they were stuck in the forest and the Pokémon helped them. Thinking it was the same Pokémon, they go to the forest to thank it. Will they be able to find it?

Ash & Co. have gone to Mount Lanakila on Ula'ula Island. When there, they learn about PokéSled Jump, a sport where trainers and Pokémon ride on sleds together to go down the mountain. Everyone decides to enter the tournament, including Team Rocket and Hala. Who will win the competition?

As if from nowhere, an Ultra Wormhole opened and Ultra Beasts have started to pour through. Ash & co. are tasked by Lusamine to capture the Ultra Beasts and return them to their home world. Ash & Co. set off on their quest but it is harder than they thought it'd be. Will they manage to calm the Ultra Beasts?

After his ice cream gets eaten by Jessie, Meowth storms off in tears and meets an Alolan Meowth. Jessie & James start to think that Alolan Meowth would be a better fit for their group, and start hatching plans to get Pikachu with it. However, Meowth refuses to give up his position in Team Rocket so plans to get Alolan Meowth out of the group, but it seems the Alolan Meowth has plans of its own...

Ash & Co. have seen a Battle Royal on TV and gets excited when he hears that if you go to the venue, you have a chance to battle the legendary Battle Royal Master, the Masked Royal. In the first match, Ash loses when the Masked Royal's Incineroar defeats his Litten, so Ash gets determined and insists he'd win a rematch. How does the rematch go?

While out shopping, Ash encounters a group of Passimian. He learns that there has been a fight between the Passimian of Melemele Island and Akala Island over who will be the leader, and the Melemele Passimian lost. Ash wants to help the Passimian who lost, but when it doesn't work, he decides he must join them as a Passimian to help out. Will Ash be able to help them win?

A former graduate of the Pokémon School, a well known trainer called Ilima, has returned to the School. Many legends are said of this mysterious trainer and Ash & co. decide to spend some time with him to see if the legends about him are true. However, before too long Team Skull show up to cause mischief. Will the group and Ilima be able to stop them?

As part of their Pokémon School campaign, Ash & co. play Poké-Ping Pong, a game of Ping Pong with your Pokémon, taught by Ilima. While playing, they learn Ilima is a skilled player and is set to enter a tournament soon. Ash & Co. decide to go watch the tournament, but they soon learn that a player that defeated Ilima in a prior tournament will also be taking part. Will Ilima be able to win?

The mysterious Ultra Beast, Poipole, appears once again, seemingly attracted to Pikachu's electricty. At one point during the school day, while Ash is distrated, Poipole appears and takes Pikachu somewhere. What does Poipole want with Pikachu? When Team Rocket soon appear, trouble may be abound for both the Pokémon. Will they be able to protect themselves?

It's time for a special work experience project at the Pokémon Center. However, when Nurse Joy falls ill, Ash & Co. decide to look after the Pokémon Center in her absence by taking care of Pokémon, delivering medicine and various other tasks. However, things are tougher than they thought, especially when Team Skull show up with their injured Pokémon. Can Ash & Co. heal them?

Sophocles has found a massive piece of bamboo buried in the ground, but while unburying it, he finds a face which starts laughing. Thinking it's a character from a story he heard as a child, he requests everyone's help to dig it out. However, Team Rocket also have their eyes set on it. What is this Pokémon? Will Ash & Co. be able to protect it?

A strange man has appeared at Kiawe's family's farm stating he wants to buy it so he can build a new resort on the island. When they decline, the man starts harassing the family to try and take the farm against their will. Kiawe is angered and challenges the man to a battl but when he loses after Marowak fails with its Z-Move, things get rough. Will Kiawe be able to protect the farm?

It's a time when the Pokémon, Dewpider, migrate to find a new place to live. However, for one, it's completely unable to find a new home. However, it soon crosses paths with Lana and falls in love with her, deciding to follow her to the Pokémon School. Will it be able to find a new home?

Mallow's older brother has returned home from a long journey. He is enthusiastic about taking part in the local Alola Bread Festival, held only once a year. Ash & co. decide to help him prepare for the festival, but when the day of the festival hits, catastrophe strikes. Will they be able to participate in the festival?

As they got a Darkinium Z a while back, when James' Mareanie learns the move Knock Off, they realise they need a Z-Ring in order to activate the Z-Moves. Giovanni informs them they may be able to get one from the Kahuna of Ula'ula Island, Nanu, so they head straight to the island. However, when they get there, they learn Nanu has gone on a journey to improve his skills and there's no sign of when he'll be back. Will they get a Z-Ring?

Wanting to continue his Island Trial Challenge, Ash has come to Ula'ula Island in order to face the Kahuna, Nanu. However, Nanu has avoided him so Acerola helps Ash track Nanu down, but Nanu refuses his challenge. Acerola decides to convince Nanu to let Ash battle him to show he's ready. Will Ash be able to prove his worth?

Following his defeat against Nanu, Acerola has taken Ash to the Ruins of Abundance to receive training from the Guardian Deity, Tapu Bulu. With the travelling having many obstacles, when Ash finally gets to Tapu Bulu, it doesn't seem to care. Will Ash be able to convince it to help him train?

Before taking his rematch against Nanu, Ash has to partake in the trial. However, the trial ends up being against Team Rocket. Once again after Pikachu, Team Rocket finally show their true power when they unleash Mimikyu's special Z-Move, Let's Snuggle Forever. With the Z-Move doing major damage, the battle between Pikachu and Mimikyu is fierce. Who will win?

It's time for Ash's rematch with Nanu to complete the Ula'ula Grand Trial. The challenge of this Grand Trial? Defeat all 3 of Nanu's Pokémon using only his Lycanroc. However, as the battle progresses, Lycanroc starts to get angry and stressed due to Nanu's Dark-type Pokémon. Will Ash be able to calm it and defeat Nanu?

Another Ultra Beast, Blacephalon, has appeared in Alola and so the group set off to calm it. However, soon afterwards, another Ultra Beast, Xurkitree also appears. The two Ultra Beasts start battling with their explosive attacks. How will Ash & co. be able to calm these Ultra Beasts and get them home?

Heading to Hokulani Observatory, Ash & Co. are on assignment to observe the Pokémon Minior. While there, they befriend one of the Pokémon and learn Sophocles once befriended one but can't really remember it. However, it seems this Minior has a secret...

Heading back from Mt. Hokulani, Ash & co. decide to take a shortcut through a cave. However, the group gets separated from eachother causing Lillie, Mallow and Sophocles to meet a group of Alolan Sandshrew. They learn that the Sandshrew are trying to protect their cave from a Tyranitar. Lillie decides to challenge the Tyranitar on behalf of Sandshrew. Will she be able to win?

Once again, Ash & Co. go to the Battle Royal Dome to see another Battle Royal. However, in the match, the Masked Royal seems to be in trouble when his Incineroar is in trouble due to dirty attacks. Ash's Torracat can't stand watching it and rushes into the ring. This causes Ash to join the Battle Royal as "Royal Ash". Can they get victory?

At the Pokémon school it was decided that the group will hold a PokéDance presentation where the Pokémon will participate in dances created by their trainers. All the trainers get in depth in making a dance that fits their Pokémon but when the day finally comes, Team Rocket appears and attacks, capturing all the Pokémon. Will Ash & Co. be able to get them back?

Aether Foundation member Faba has returned to the Pokémon School. He has come to show off a machine that will shrink anything, no matter how big. However, the machine malfunctions and Ash, Lillie & Sophocles get shrunk down and due to trouble, get stuck outside. Will Ash & Co. get back to the school and get back to full size?

Ash & co. meet Mina, a trainer who paints pictures. Together with her Ribombee, she's able to tell how Pokémon truly feel. On learning that Ash's Poipole likes to paint pictures, she takes a look and can sense great happiness but also sadness from the pictures. How does Poipole truly feel?

While at the Pokémon School with various athletic equipment, a Stakataka appears. The group immediately try to stop its rampage, but their Beast Balls won't hit it. As it's not moving, the group decide to leave it and regroup for the next day, but when they return it has started to move towards the city. Will Ash & Co. be able to stop it?

As they have been constantly having to assemble to take on the Ultra Beasts that appear in Alola, Ash & Co. are taken to a Pokémon Steam Paradise resort, where they also take their Ride Pokémon in order to get some rest. However, while relaxing, Team Rocket soon appear and kidnap various Pokémon. Will Ash & Co. be able to stop them?

The adults in Alola have started to act all lethargic and sleepy. To investigate this mystery, the Ultra Guardians head to the Altar of the Sunne to investigate, joined by Gladion. However, soon after they arrive an Ultra Wormhole opens up and Lunala exits, closely followed by the mysterious Ultra Beast, Necrozma. What does Necrozma want?

Lunala and Necrozma have appeared at the Altar of the Sunne and start battling. Ash & co. start to try to battle Necrozma to help Lunala but their attacks have no effect. However, to make things worse, a group from Team Rocket have also appeared and are trying to catch both Lunala and Necrozma. When all seems to be useless, Nebby returns from the Ultra Wormhole. What will happen? Will they be able to stop Necrozma and Team Rocket?

With Lunala recovered, Ash & Co. join it through the Ultra Wormhole in hunt of Necrozma who has taken over Solgaleo. When through the wormhole, they find themselves on Poipole's homeworld but things on this world are not alright. In addition to this, the special unit from Team Rocket is also going through the wormhole with their eyes set on Necrozma. Can they also be stopped?

With the strength of all of their Z-Moves combined, Ash, Lana, Kiawe & Gladion do their best to rescue Nebby and help Necrozma. However, back in Alola, Team Rocket are still trying to get into the wormhole to get Necrozma. Will Ash & Co. be able to help Necrozma return to being what is known in legend as The Blinding One and will they be able to save Poipole's world and Alola?

Ash & Kiawe have gone to the Pikachu Valley where many Pikachu live. When there, they meet a trainer who loves Pikachu. As the Pikachu come in many varieties in the valley, Ash's Pikachu is somewhat amused, but when Team Rocket show up, their Mimikyu starts going wild, and when its Z-Move is used, things get bad. Will Ash & Co. be able to protect the valley?

Ash & Professor Burnet have learned that the Masked Royal is going to hold a meet & greet on Melemele Island, they are eager to go and invite Professor Kukui with them. However, as Professor Kukui is the Masked Royal, he can't do that so he has to make a plan to get out of it, and when one of his rivals appears, things start to get messy. Will Kukui's plan succeed?

Fula City was founded on barren land that was developed by humans after the Legendary Pokémon Lugia granted them the power of wind. The wind festival is held every year.

Fifty years ago, the nearby mountain forest was engulfed in flames due to humans clearing the mountain forest and looking for the mysterious Pokémon Zeraora. Harriet, the woman who built the wind power plant, burned her hand while failing to save her Snubbull from the burning windmill; she was only able to get the key to start the turbine that Snubbull was holding. This resulted in her becoming distant from Pokémon. Lugia was called to clear the fire. Hoping to protect Zeraora from the humans, the Mayor of Fula City created a lie that Zeraora had died and cursed the mountain. This secret was kept by the mayor's successor, Oliver. In the present, Oliver's daughter Margo takes care of Zeraora after it injures itself saving Margo and two other Pokémon from a rockslide in the foothills.

Former track runner Risa agrees to attend the festival to capture a wild Eevee for her younger brother Rick. Ash Ketchum and his Pikachu attend the festival and take part in the Pokémon catching contest. Callahan attends the festival with his sister Mia and her daughter Kelly. Kelly suffers from low immunity, so Callahan invents tall tales about him being the best trainer when he does not even have a Pokémon. Harriet, now an old woman, gets the essence of the Pokémon move Sweet Scent on her, resulting in Pokémon following her wherever she goes.

Getting help from the timid scientist Toren, the con artist and liar Callahan decides to give Toren's speech at his lab in return for Toren helping him win the Pokémon catching contest. A Sudowoodo Callahan took pity on begins following him. Callahan comes in first boasting about a rare Pokémon in the woods intriguing everyone, but worrying Margo. Ash places second, and helps Risa capture an Eevee.

Upset over the amount of Pokémon that have been following her, Harriet goes to Toren to ask for an antidote, but says it will take time resulting in her staying with him. Callahan is unable to make it to the speech. Toren tries to give the presentation on his own, but accidentally plays footage of him helping Callahan at the contest in time for everyone to see it. Upset over her uncle's lies, Kelly passes out from exhaustion. Team Rocket steal a bottle of the ability Effect Spore from the lab. However, the trio accidentally loses it in the woods.

Margo steals the eternal flame, a light held on the highest tower in the city to contact Lugia, to stop the festival and keep Zeraora safe and hidden. Margo tries to protect Zeraora from two poachers, but they are rescued by Ash and his friends just in time. Suddenly, the Effect Spore bottle cracks engulfing much of the forest and the city and the group decide to work together to stop it.

Callahan discovers that Mia and Kelly are trapped in a gondola while the city is being engulfed and Sudowoodo allows itself to be captured by him so that they can save the city. Toren gets to the lab and works on an antidote for the Effect Spore threatening the city. A fire suddenly breaks out in the forest, killing the electricity, but Toren uses Team Rocket's Lum Berries to create the antidote.

Zeraora awakens and begins rescuing Pokémon. While Ash and Margo decide to go follow it, Risa is tasked with taking the eternal flame back to the tower. Ash and Pikachu end up fighting Zeraora, who still distrusts humans, but Ash and Margo manage to get through to it and they try help put out the flames. Toren arrives at the power plant to give the antidote to Callahan who tosses it into the turbines while Harriet and the Pokémon turn the blades. Risa gets the eternal flame to the top, and Lugia arrives to put out the fire. Mayor Oliver revokes the lie about Zeraora's disappearance and proclaims that the citizens will peacefully live alongside it.

In the post-credits, the Pokémon Channel announcer is revealed to be Rick as Risa demands to know how he knew where she was. Ash and Pikachu head to their next location.