Following the Pokémon World Championships final, a wild Drednaw has mysteriously Gigantamaxed in Wyndon Stadium. Ash and Go try to stop it but Pikachu starts getting surrounded by a red light... then, after that, Ash challenges Leon to a battle. With Ash using Pikachu and Leon using Charizard, the battle is fierce. Who will win? The Alola Champion or the World Champion?

There are some issues at Sakuragi's laboratory. As such, Ash and Go have to return home while the systems are being fixed. Go is happy to see his parents as he hasn't seen them for a while but gets told they can't return home due to a job they have to do. Expecting as much, Go travels around town and meets a Cubone that is very sad. Go decides to help the Cubone look for the object that's missing, will he be able to find it?