Satoshi and friends have boarded a ship bound for the port city of Kuchiba, Kanto. The end of their voyage through the Decolora Archipelago is thus finally coming to an end. Meanwhile, the Rocket Gang plots to get Pikachu and the other Pokémon before Satoshi and friends arrive in Kanto, some way or another. Thus, they throw the ship into complete chaos as they make it lift up from the sea into the air with giant balloons. As usual, they attempt to steal Satoshi and his friends' Pokémon, but this time even Parker seems to get in our heroes' way. But then, there's suddenly two Parkers...!?