Perseus tries to live a quieter life as a village fisherman while – dangerously weakened by humanity's lack of devotion – the gods are losing control of the long-imprisoned Titans and their ferocious leader, Kronos.

At an academy for mythological warriors, 17-year-old Hercules meets Jason, the next in line to rule Corinth. When Jason discovers that his father is ill, Hercules decides to seek out the Golden Fleece that could cure him. But limitations to his powers, as well as his half-brother Ares, stand in his way.