Clash of Titans

A fisherman, Spyros, finds a coffin adrift in the sea, discovering the baby Perseus and his dead mother, Danaë, inside. Spyros decides to raise Perseus as his own. Years later, Perseus and his family are fishing when they witness a group of soldiers from Argos destroying a statue of Zeus and declaring war on the gods. Hades commands harpies to massacre the soldiers, then destroys the boat Perseus and his family are on. Perseus tries to save his family but to no avail, the surviving soldiers take Perseus back to Argos.

During a feast for the returning soldiers King Cepheus and Queen Cassiopeia of Argos compare themselves and their daughter, Andromeda, to the gods. Hades appears and kills the remaining soldiers but Perseus is unaffected. Hades realizes Perseus is a demigod and reveals Zeus is his father. Hades kills the queen, and threatens that if Princess Andromeda is not sacrificed to the Kraken, Argos will be destroyed.

The king seeks the help of Perseus. Perseus and Io embark on a quest to find the Stygian Witches. Hades enlists Acrisius, the man who was married to Danaë when Zeus impregnated her with Perseus. It was Acrisius who had set Danaë and the baby Perseus adrift in their coffin. Hades imbues him with powers to aid him in killing Perseus, and Acrisius takes the name of Calibos. Calibos attacks the group led by Perseus. They sever successfully the hand of Calibos, but his blood transforms into giant scorpions, and Perseus and his group are attacked. They are saved by Djinn, sand-demons with magical powers. Perseus and the Djinn agree to cooperate.

At the Garden of Stygia, the Stygian Witches tell Perseus that the head of Medusa could kill the Kraken, but that Perseus will die in the process. After leaving the witches, Perseus talks to Zeus who offers to make Perseus a god. He refuses. Zeus gives him instead a golden drachma. Perseus uses the coin to bribe Charon for passage into the Underworld and enters Medusa's lair. Draco, one of the soldiers with Perseus, allows himself to be turned to stone to give Perseus a clear shot at Medusa's head. Perseus kills Medusa, but Calibos kills Io. Perseus kills Calibos, turning him back into Acrisius in human form. Perseus rides Pegasus back to Argos where the Kraken is destroying the city.

Hades hopes the destruction of Argos will give him enough power to overthrow the other Olympians. Zeus attempts to banish Hades back to the underworld. Hades overpowers him but an injured Zeus reveals that Perseus is still alive. Hades leaves to oversee the Kraken's attack and ensure his victory.

Perseus defeats the creatures sent by Hades and uses the head of Medusa to turn the Kraken into stone. Perseus throws his sword at Hades, charged with a bolt of lightning from Zeus. This banishes Hades to the Underworld. Perseus saves Andromeda, but he declines to become king of Argos.

Zeus offers to make Perseus a god, but he refuses. Zeus warns Perseus that Hades will return someday when mankind is in fear. Since Perseus is intent to stay on Earth, Zeus resurrects Io, and the two embrace while Pegasus flies above them.