In the Antilles, old Tyler finds a treasure map and sets sail with his ship, the Sarah Tyler, and its crew composed of only two children: Satan and Jude. Three months later, Cleary, a buccaneer, learns that Tyler died and the two kids are in Bridgetown trying to fix the ship. One of Cleary's associates, Carquinez tries to fight Jude for the map but she is rescued by Sidney Radcliffe who stays on board to protect them. When Satan, Jude and Sidney reach the shores of the treasure island with Carquinez and Cleary's ships, Satan pretends he will let the two pirates have the treasure in exchange for a thousand dollars because he found out there is no treasure to begin with. Meanwhile Jude and Sidney have fallen in love and plan to marry.