Artemis, a great athlete, enlists her fellow goddesses Athena, Persphone, and Aphrodite in a plan to persuade Zeus to open up the boys-only Olympic Games to girls.

"So, it turns out Titan power is pretty awesome. Only I can't control my new gift and that's not only embarrassing but also dangerous. And I'm sure our new professor is one of the two demons I accidentally let loose in Olympus. Icarus says we should lay low for a while but every time Professor Neos flashes me those red eyes I want to challenge him. And when students start collapsing to the ground with their souls stolen, I have no choice but to act"--Back...

"After dredging up a flying pirate ship belonging to the long lost Oceanus, I'm leaving the academy on a quest. And it's not just me going. My friends Icarus, Zali and Thom are coming too, but in a strange turn of events, two of the people who hate me most in the academy are also tagging along for the ride. And what a ride it's going to be: we have to follow a series of clues across some of the most dangerous parts of Olympus, to try and free a Titan...

After learning that he is the son of a mortal woman and Poseidon, god of the sea, twelve-year-old Percy is sent to a summer camp for demigods like himself, and joins his new friends on a quest to prevent a war between the gods.