On the beach near his home, Jimmy (Charles Herbert) finds a bottle that contains a genie named Abu (Joseph Turkel), who magically transports him to the ship of the pirate Blackbeard (Murvyn Vye). Abu explains that the bottle must be returned to its original location in three days, or Jimmy will take the genie's place. The pair spend a few eventful days with Blackbeard, evading capture, accompanied by a girl (Susan Gordon) they rescue, but Jimmy begins to wonder if he'll ever get back home.