Perseus, mortal son of Zeus, battles the minions of the underworld to stop them from conquering heaven and earth. br br Director: br Louis Leterrier br Writers: br Travis Beacham (screenplay), Phil Hay (screenplay), 2 more credits » br Stars: br Sam Worthington, Liam Neeson, Ralph Fiennes | See full cast and crew br br Storyline br br Princess Andromeda is the daughter of King Cepheus, who has gained a victory against the gods. The vengeful god of the underworld, Hades, demands that Andromeda is offered as a sacrifice or he will unleash the Kraken against Argos. A desperate King Cepheus asks demi-god Perseus to find a way to defeat the Kraken. Perseus accepts the challenge because Hades was responsible for his family's death. He discovers that the way to kill the Kraken lies with getting the head of the gorgon Medusa.