As Ash & Co. head to the next island, they soon find a large area of fog start to envelope the ship. They learn that the next island they're heading to is an island where loads of giant Pokémon used to live. As they enter the island, they soon sense something and spot a giant Heatmor, which attacks them. This leads them to more Pokémon which attack, but when they get to a Pokémon Centre, they soon learn that things are not what they seem on the island...

While heading to the next island, Team Rocket concoct a plan to steal all the food from the ferry's store room. However, before they get a chance, various Water-type Pokémon appear and steal the food before them, taking it off the ferry. Ash & Co. hear the alarm and rush to help, only to find the getaway raft and watch the Pokémon get away with the food. After hearing about the acts that these pirate Pokémon partake within, Ash decides to try and stop them, with Charizard, Snivy & Pignite attempting to make them see the errors of the ways. Will they succeed?