- Directors: Desmond Davis
- Producers: Ray Harryhausen, Charles H Schneer
- Writers: Beverley Cross
- Genres: Action, Adventure, Fantasy, Family, Romance
- Actors: Laurence Olivier, Harry Hamlin, Judi Bowker, Maggie Smith, Ursula Andress
With his grandson Perseus prophesied to bring about his destruction, King Acrisius of Argos casts his daughter Danae and her infant son out to sea in a wooden coffin. In retribution Perseus’ father, the god Zeus, orders the god of the sea Poseidon to release an ancient monster known as the Kraken to destroy Argos. Meanwhile Danae and Perseus are safely brought to the island of Seriphos.
Calibos, son of the sea goddess Thetis, is a handsome young man destined to marry Princess Andromeda, the daughter of Queen Cassiopeia and heir to the rich city of Joppa and eventually all of Phoenicia. He was given the kingdom known as the Wells of The Moon to rule over, but he eventually reduced it to a barren, swampy wasteland, hunting and destroying everything that lived there. As punishment for this and for trapping and killing Zeus’ entire sacred herd of flying horses (except for Pegasus) and his many other transgressions, Zeus transforms Calibos into a goat like monster who is subsequently shunned and forced to live as an outcast in the swamps and marshes. Thetis, furious at her son’s fate, vows that if Calibos cannot marry Andromeda, no other man will either.
Just as Andromeda is about to be sacrificed to the Kraken, Perseus appears astride Pegasus, turns the Kraken to stone with Medusa’s head, and frees Andromeda. The hero and heroine become constellations at the decree of Zeus, who does the same for Pegasus and Cassiopeia.