In the sequel to PokéPark Wii: Pikachu's Adventure, Pikachu comes to a new PokéPark with his best friend Piplup. They hear of an area there called Wish Park, full of fun and adventure. However, they find that Wish Park is actually a place where Pokémon are trapped and cannot leave. Furthermore, Reshiram and Zekrom have seen that a dark omen is about to fall on the PokéPark.