The legendary Sinbad (Kerwin Mathews) sets off on a dangerous journey to the mysterious Island of Colossus to break the spell cast over his beloved princess (Kathryn Grant) by a diabolical magician (Torin Thatcher). Before he can save her, Sinbad must battle an awesome collection of mythical monsters: the man-eating Cyclops, a saber-wielding skeleton, a ferocious two-headed bird called the Roc and a fire-breathing dragon, all animated by the stunning visual effects mastery of Ray Harryhausen.