The trailer for the Clash of the Titans.
King Acrisius of Argos locks his daughter Dana away from mortal men to avoid a prophecy that he would die if his daughter had a son. While she is imprisoned, the god Zeus visits her and she becomes pregnant. After discovering the pregnancy, Acrisius casts his daughter and her newborn son Perseus out to sea in a wooden coffin, hoping to kill both and avoid his fate. In retribution, Zeus orders the god of the sea Poseidon to release an ancient monster known as the Kraken to destroy Argos, fulfilling the prophecy. Meanwhile, Dana and Perseus safely float 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. But cruel and destructive Calibos has hunted and destroyed every living thing surrounding the Wells of The Moon, including Zeus' entire sacred herd of flying horses (except for Pegasus). As punishment for this 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. Equally infuriated by Zeus's total devotion for his own son, Thetis transports Perseus from Seriphos to Joppa. Befriended by the scholar and playwright Ammon, Perseus learns of Andromeda and her plight: she cannot marry unless her suitor successfully answers a riddle, and any suitor who fails to answer the riddle correctly is burned at the stake. Armed with gifts from the gods (a sword, shield, and a helmet that renders its wearer invisible), Perseus captures Pegasus and follows Andromeda's shade on her nightly journey to learn a new riddle from Calibos. Armed with the answer, Perseus is nearly killed by Calibos, but escapes, losing the magical helmet in the swamps in the process.