Percy Jackson is a teenage boy who always seems to get into trouble, no matter how hard he tries to be good. When he is expelled from school for the sixth time, his mother decides that it is time for Percy to know the truth. The Greek gods are real and, what's more, Percy is a demigod, the son of Poseidon. Along with fellow demigod Annabeth (the daughter of Athena) and best friend and protector Grover (who happens to be a Satyr), Percy must go on an epic quest to retrieve Zeus' stolen lightning bolt and prevent war amongst the gods. The quest turns into an epic adventure, with the Furies, Medusa, and Ares (the god of war) among those wanting to stop Percy in his tracks. With time running out, Percy soon discovers that nothing is normal when you're a demigod.