The Sparticle Mystery - Episode Guide

When every single person over the age of 15 mysteriously disappears, the children are left to fend for themselves. While some turn to looting, Sadiq leads a small group to the safety of the City Hotel.

Callum's new gang intend to take over the City Hotel, using Kat to gain access. Meanwhile, Reese visits the library to learn more about the Sparticle Project, and sees 'ghosts' of the adults there.

While visiting the university to find food, Reese discovers a message from Doomsday Dora explaining how the adults disappeared and urging the children to help them return. Meanwhile, Holly is held hostage by the only remaining adult.

To decide who will lead the quest to reunite the two worlds, the tribe compete to find a new power source. It becomes more urgent when they discover the hotel's boiler is about to explode unless the electricity can be restored.

While taking a break at a funfair, Reese has visions of Doomsday Dora who is trying to give them a message. Back at the City Hotel, the national water supply has failed and the team must find a new source of fresh water.

Dora's clue leads the Questers to a science facility where the Sparticle Project was developed. But the simulator leaves Ami, Jordan and Holly trapped in a room with the particle collider's cooling system as the temperature drops.

Ami is taken hostage by a fun-loving group living on a barge when they mistake him for a member of a rival tribe. Jeffrey needs new batteries for his wheelchair so he can help out more at the City Hotel.

While stopping to repair their van, the Questers get caught up in a 'revolution' at a posh boarding school, where rebels are trying to overthrow the Head Boy who will do anything to keep things running as he believes they should be.

The Questers replenish their food supplies at a seemingly abandoned farm, but are caught red-handed by the farmers who accuse them of stealing. Meanwhile, a group of hungry girls follow Liam back to the City Hotel and demand to be fed.

As the tribe get closer to the Sparticle Project, Holly wonders if she really wants the quest to succeed, and leaves her fellow Questers trapped in an underground nuclear bunker.

Without the adults to keep things running smoothly, nuclear power stations start leaking deadly radiation. The Questers must find a way to get a message to the adults.

Ami desperately needs insulin for his diabetes, but the youngsters now running the hospital don't take kindly to the visitors. Meanwhile Tia worries that her approaching 15th birthday could mean she will disappear like the adults.

The two parts of the tribe are reunited at the Black Tor Mine for the final stage in their quest. But another tribe is guarding the Sparticle Project and won't let anyone in.

The tribe are falling apart and Holly decides to end the quest by selling the key to Fizzy. Sadiq realizes that the key fits a stone head and challenges Fizzy for the chance to win back the key, the stone head, and Reese's freedom.

The Sparticles need to translate the message on the stone head, but the museum is locked down. Rocky offers to help as he wants to steal gold to pay for fuel. Holly and Serena offer the museum Fizzy's protection in return for the decoder.

The Sparticles find themselves in a circus and pose as clowns to avoid trouble. Serena's sister points her to a chalk horse where they find the next clue - an old sword. Holly gets trapped underground and needs Sadiq's help to get out.

In Peace City, Sadiq is mistaken for a dance star and Reese meets a boy with similar powers to her own. Fizzy offers a massive reward for capturing the Sparticles, but when that doesn't produce results he decides to take over the city.

According to rumors, Watermint Mill is home to a child-eating creature. Serena and Holly discover that the stone head also has a body, while Reese and Huen are drawn to the creature, sensing that it has powers like theirs.

Jeffrey is stung by a poisonous plant and needs an antidote that is held in a castle guarded by a tribe of knights. The Sparticles must compete in a tournament to win back the sword. Reese discovers that someone is blocking her powers.

A tribe of traders imprison the Sparticles, accusing them of stealing a shipment of chocolate intended for Fizzy. Reese's powers are increasing, but the rest of the tribe aren't happy to discover that she can control them.

The race is on to assemble the Statue of Artos in time for an annual ritual, but Ernesto has decided that his revolution will be easier without the adults. Reese has an out-of-body experience and is reunited with Muna.

Tensions are rising as the race to the Quantum Nexus nears its end. The sword shows Holly the way and Serena leaves a trail for the Sparticles. Believing that realigning the worlds would be dangerous, Reese teams up with Ernesto.

Arriving at the Quantum Nexus, the Sparticles are greeted by a holographic version of Doomsday Dora, who explains that they can identify the right dimension to bring their parents back, but Reese's sabotage attempts cause a malfunction.

In a world with no adults, now ruled by teenagers and the monstrous Queen Kylie, the Sparticles join the fight for survival.

The Sparticles' mission to send Queen Kylie and the Teen Parents back to the dimension they came from hits a snag. Former Emperor Fizzy is after them.

The Sparticles find a third person with 'powers' like Reese, and the mission to rid the world of Queen Kylie moves up a step with the discovery of a curious map.

Reese uses her 'powers' and the help of Holodora to work out the secret to ridding the world of Queen Kylie and the Teen Parents.

Ernesto stages a rebel rescue mission to spring Orion from Kylie's citadel, and learns how he nearly got named something far less revolutionary at birth.

Frankie's hunt for her lost rabbit discovers the spooky forest-dwellers, a new sensitive and a case of identity theft by a 'friend' of Queen Kylie.

Reese and Aris have a close encounter with the missing adults, and Holly's mystery illness is diagnosed by a new sensitive with special healing powers.

Queen Boudicca's daughter wants to help the Sparticles fight against Queen Kylie but she urgently needs to return to her own dimension to fight the Romans.

Ernesto and Serena stage a daring raid on Kylie's Citadel, where Dora's discoveries have assisted Queen Kylie in her plans for world domination.

In a haunted house where a ghost buster is busy disproving the existence of a ghost, why are the Sparticles disappearing one by one?

Both Queen Kylie and the Sparticles are held up in the race to the circle of perpetual time by troll queen Trina. Do trolls really eat people?

The Sparticles discover the oldest man in the world in his circular garden. Is he the last clue for them to rid the world of Queen Kylie?

The comet approaches, and time is running out in the hunt for the seventh sensitive to help rid the world of Queen Kylie.