Class of the Titans (2005)

Imprisoned thousands of years ago by his son Zeus, Cronus, the god of time, escapes from the Underworld. Now history is about to repeat itself as Cronus heads a legion of mythological monsters in his quest to conquer and destroy the world...But there is a prophecy... Seven teenagers stand in his way. The unknowing descendants of great mythological heroes, under the guidance of the Olympian Gods, find the power within themselves to save the world from the encroaching evil.