Plot: The mortal son of the god Zeus embarks on a perilous journey to stop the underworld and its minions from spreading their evil to Earth as well as the heavens. Born of a god but raised as a man, Perseus (Worthington) is helpless to save his family from Hades (Fiennes), vengeful god of the underworld. With nothing left to lose, Perseus volunteers to lead a dangerous mission to defeat Hades before he can seize power from Zeus (Neeson) and unleash hell on earth. Leading a daring band of warriors, Perseus sets off on a perilous journey deep into forbidden worlds. Battling unholy demons and fearsome beasts, he will only survive if he can accept his power as a god, defy his fate and create his own destiny.

Source#1: Watch Clash of the Titans (2010) Online-full