A ship captain's beautiful daughter and a wealthy playboy who is searching for buried treasure find themselves stranded on a desert island.
A police dog and his cop track a gang of bank robbers, one of which is the dog's former abusive owner.
After it has been sold to a new owner,a shyster and killer has stolen the property deed to a valuable mine and is using it for blackmail purposes. The former owner of the mine is framed for a murder, and his daughter and the new owner work to save him from the gallows.
