The son of an overthrown king must embark on an epic sea voyage in search of the fabled Golden Fleece so he can return and reclaim his kingdom. Before he can seize the treasure, he has to overcome a series of horrific creatures, including a seven-headed monster and a horde of sword-wielding skeletons. Mythological fantasy adventure, starring Todd Armstrong, Honor Blackman, Nancy Kovack, Niall MacGinnis and Patrick Troughton, with special effects by Ray Harryhausen