Ash Ketchum, his Starter Pokémon Pikachu and their friends Dawn and Brock help Vector the Crocodile, Espio the Chameleon, Charmy Bee, Mighty the Armadillo, and Silver the Hedgehog save Sinnoh from sinister entrepreneur Junior, his assistant Breezie the Hedgehog, and treasure hunter Nack the Weasel.
