A swashbuckling adventure aboard a pirate ship, turns into a battle for survival when Selkirk and Pupi, find themselves captive and marooned on a deserted island after the crew steals their treasure map and discovers their true identities.

Selkirk, an unruly, selfish pirate, is the sailing master of the Esperanza, an English galley sailing the South Seas in search of treasures. When Captain Bullock, decides to abandon him on an uninhabited island, he discovers a new outlook on the world and learns to survive alone, becoming the real Robinson Crusoe.