The harmony among the castaways is disturbed when another shipwreck survivor Irving---a convicted criminal---makes it to the island.

Irving (Don Barkham) is the convict whose obsession with the idea of escaping to the Dutch East Indies disrupts life among the survivors.

The two youngsters in the party of Castaways, David and Angy, go off in search of food along the shore. They become alarmed when they see a canoe of painted cannibals, out hunting . . .