Team Rocket meets a Mimikyu and a Bewear.The class takes an ocean field trip to help the water Pokémon train, and Popplio practices blowing bubbles. Ilima is looking for a rematch, and Team Rocket has plans too.The Poipole returns, and only Pikachu spots it!

Can they save the play?The Pokémon School becomes a haunted house!

Lillie’s attempt to awaken Magearna stirs up memories of her past.Led by Magearna's vision, Lillie and Gladion set off on a journey to find their father. Luckily, a hero appears!The semifinal round begins with Gladion and Silvally facing Kiawe and Turtonator. But for the first time in a while, he chooses to stay in the fight until the very end.Professor Oak and Delia arrive the night before the final match. They'll save the world ... for the right price. Ash's Rowlet and Rockruff face Olivia's Lycanroc and Probopass!The night of the battle, Rockruff sneaks off and meets the island guardian Tapu Lele. The Guardians pursue it to Viren's building site!The Ultra Guardians and their Ride Pokémon travel to the Pokémon Paradise Resort for some relaxation. While Ash and Lana search for them, they fall straight into Team Rocket!When Ash loses his Z Crystal, Rotom takes the chance to imitate the detective on his favorite TV show, with Pikachu assisting him on the case.Ash helps Mallow search for a legendary ingredient so she can recreate a traditional Alolan recipe, but Team Rocket is also on the prowl.Ash realizes that he may be facing Tapu Koko in a rematch soon, so Sophocles offers to help out with scientific research for his training.After hearing stories about "Treasure Island" from his friends, Ash sets off to explore the island with Pikachu and comes across a mysterious sight.Ash runs into Litten and its friend Stoutland again on his way home. But Team Rocket is back too.It's just like old times when Ash and his friends battle Misty and Brock at the Cerulean Gym, with Z-moves versus Mega Evolution.Ash's Alola adventures continue, with the legendary Pokémon Cosmog leading him and his friends to the Island Guardians, Ultra Space and beyond.After returning to Melemele Island, Ash has a strange dream.

They scheme to steal Cosmog, but it's got teleportation powers.Lillie's mom invites everyone to her private island, but her assistant Faba is being creepy towards Cosmog, and Team Rocket has infiltrated the staff!When Ash starts thinking about Lillie's brother Gladion during Pokémon bathtime, Cosmog teleports them to Gladion's location: a valley full of Pinsirs!Lillie argues with her mother over recording her activities, casting a shadow over the group sleepover at Ash's house with Professor Burnet.Following the incident in the cave, Lillie regresses and can't touch Pokémon again. Le départ.

Poipole begins expressing itself through painting, but then its feelings take a dark turn.After practicing vaulting in gym class, the students mistake Ultra Beast Stakataka for a vault box. Then Ash and Torracat square off against Guzma and Scizor.With his winning streak at stake, Guzma is tormented by fear. Principal Oak and Mallow vs. Lana!Jessie and James face off, still undercover and in agreement to perform half-heartedly. And what's this huge Pokémon?The Pokémon School is in destruction, completely ruined! But it looks like they have company.Love is in the air! Professor Kukui gives Ash a Rotom Pokédex that can speak and interact with humans, and Ash heads out to catch Pokémon.Ash and Pikachu's failure to capture a wild Alolan Pokémon results in a visit to the Pokémon Center.