When Ash discovers a sign announcing "The World's Most Powerful Pokémon," he is unable to resist challenging its Trainer, Anthony, to a battle. The Pokémon in question turns out to be a Pelipper, who wins easily by using attacks it shouldn't be able to use. After Ash and the others leave, Team Rocket challenges Anthony and discovers his secret: he's hiding Poké Balls inside Pelipper's enormous bill! With Team Rocket pulling the strings, Anthony continues to take on all challengers, but this time the villains get to keep every Pokémon they defeat! After landing quite a haul, Team Rocket challenges Ash--but they've loaded up poor Pelipper's bill with so many Poké Balls that they overflow. Team Rocket is defeated, the stolen Pokémon are returned, and Anthony decides that he'd rather make Pelipper the world's most powerful Pokémon through honest training!