The hero of the fantasy series "Percy Jackson and the Olympians" is an ordinary twelve-year-old boy who unexpectedly learns about his divine heritage. It turns out that Percy is the son of a mortal woman named Sally and... the ancient Greek god of the seas, Poseidon himself. Mystical abilities awaken in the boy, and now he has no place among ordinary people. But the world of the gods does not accept him either. When someone steals Zeus' main weapon - the lightning bolt, Percy becomes the prime suspect.