A prophecy states that the king of Argos will be defeated by his infant grandson Perseus, so the king throws Perseus, and his mother, into the sea. They are rescued by a fisherman, and young Perseus grows up, unaware of his royal birth. Before he can claim his heritage, the hero is ordered to slay a hideous monster named Medusa, whose gaze turns men into solid stone. How can the youth fight an enemy he cannot even look at? He will need the wisdom -- and the weapons -- of the gods themselves.