"Percy Jackson and the Olympians" follows Percy, a 12-year-old learning that there is more to his absent father than he thought. Percy is the son of Poseidon (Toby Stephens), the Greek god of the sea, making him a demigod or half-blood. After an incident at school gets him expelled, his mother Sally (Virginia Kull) and his best friend Grover, who is actually his satyr protector, take him to Camp Half-Blood. The camp protects demigods and prepares them for the monsters who are after them because of their pedigree.
While training, Percy goes on a quest to recover Zeus' stolen master bolt. The Greek god of the sky believes Percy stole it, so it's up to the preteen to figure out who did, take the bolt from them, and return to Olympus. He takes Grover and Annabeth, a daughter of Athena, with him on his journey. Armed with only the knowledge from the stories his mother told him growing up, Percy quickly gets in over his head and behind schedule.
They move west across the country to find an entry point to the Underworld. Hoping to recover the bolt and Sally (who has seemingly been killed but is said to be alive), the trio encounter a variety of Greek figures, from Medusa to Ares, and battle their way out of perilous situations. Along the way, the three bond and learn more about the dynamics of the gods.
