Plot Synopsis for Clash of the Titans from IMDB

"The Clash of the Titans" is set in the Greek city of Argos where a war is about to explode between man and the gods. Perseus (Sam Worthington) raised as a fisherman, but is actually a demi-god. Perseus is the son of Zeus (Liam Neeson) who is about to take on the gods after the death of his family. Zeus' brother Hades (Ralph Fiennes) was the one who killed his family, and Perseus wants to kill him. However, it is Perseus's destiny to rescue the city of Argos from the ruthless rage of Hades and his Kraken monster. With nothing to lose, Perseus leads a band of soldiers on a quest to defeat the Kraken. In doing this, Perseus will prevent Hades from overthrowing Zeus and in turn destroying mankind.