While enjoying a day at the beach, Pikachu and the Pokémon encounter a frail Wynaut seeking help. Wynaut reveals that Meowth and Team Rocket, aided by Exploud and Hariyama, have targeted Wynaut's friends to claim their playground on a neighboring island. Motivated by Wynaut's plea, Pikachu and friends rally to assist, training the Pokémon to reclaim their territory from the grasps of Meowth.