As they arrive to Lilycove City, the heroes meet Kelly, a fellow Coordinator, who knows how to make good Pokéblocks. As Max stays with Ash, who wants to teach Swellow Aerial Ace, Brock is with May, who wants to learn more about Pokéblocks from Kelly.

Due to a mistake, the heroes sail away to an island, with their actual destination being Mossdeep City. On the island, they find Jimmy, who trains to become a judge. With teacher Serena's help, Jimmy tries to be the referee of a Double Battle of Ash vs. Brock. After the battle, Jimmy recalls his past before he has to rescue his Pokémon, who were stolen by Team Rocket.