The Straw Hat crew stumbles upon an advertisement for a recreational island on the Grand Line, run by the enigmatic Baron Omatsuri. Luffy seizes the chance to relax, but upon arrival the crew learns they must compete in a series of contests to earn access to the island’s leisure facilities. The island’s mysterious atmosphere quickly gives rise to tension, and the Straw Hats begin to quarrel among themselves. Meanwhile, Robin, Chopper, and Luffy each set out to uncover the secret behind Baron Omatsuri’s island.