It is a fictional autobiography of Robinson Crusoe, who happens to be a castaway. Crusoe is compelled to spend twenty eight years on a remote island near Trinidad, the West Indies.He lives alone, facing all sorts of dangers. He encounters cannibals, captives, and mutineers. Finally, he is rescued from that island.It is generally assumed that the story is inspired by a real life character, Alexander Selkirk who was a Scottish castaway who was forced to live for four years on the Pacific island called "Mass a Tierra". The name of the island was changed to Robinson Crusoe Island, Chile.