When Captain Murphy is attacked by two thieves, the unemployed sailor Bob recovers his money, and in return, the captain hires Bob to work in his ship. In a storm, they leave the vessel and their lifeboat is rescued by pirates. With the support of the cooker Lin-Fo that drugs the crew, they escape with two sisters to the Devil's Island. The pirate captain and his master chase the group in the island, where a tribe of cannibals worships a monster and protects a treasure and chase the survivors.