A large monster attacks Luffy and his crew of Zoro and Nami while they are starving on their small boat. Nami is kidnapped, while Luffy and Zoro wash up on the beach. There, they meet a young girl named Medaka and learn about the island's tragic history. The evil Pirate Ganzack has kidnapped and enslaved all of the men in the village, including Medaka's father. To save the villagers and Nami, Luffy, Zoro, and Medaka must infiltrate Ganzack's base.