When a ship sinks during a storm, a slave from the industrial island of Plutonia is washed up on the beaches of paradise island Melonia, where the "all-powerful" wizard Prospero and his strange friends reside.
The young nobleman Inge is riding through Sweden, looking for his twin brother, Arild. He meets a group of gypsies who welcome him. They met Arild earlier and believe that the brother is Arild. Inge falls in love with the mysterious girl Isis.
