Jason has a problem. He doesn't remember anything before waking up on a school bus holding hands with a girl. Apparently she's his girlfriend Piper, his best friends were two kids named Leo and V which was short for Vivian, and they're all students in the Wilderness School, a boarding school for "bad kids." What he did to end up here, Jason has no idea-except that everything seems very wrong.
Piper has a secret. Her father has been missing for three days, and her vivid nightmares reveal that he's in terrible danger. Now her boyfriend doesn't recognize her, and when a freak storm and strange creatures attack during a school field trip, she, Jason, and Leo are whisked away to someplace called Camp Half-Blood and. Then her best friend Vivian is a very powerful demigod. What is going on?
Leo has a way with tools. His new cabin at Camp Half-Blood is filled with them. Seriously, the place beats Wilderness School hands down, with its weapons training, monsters, and fine-looking girls. What's troubling is the curse everyone keeps talking about, and that a camper's gone missing. Weirdest of all, his bunkmates insist they are all-including Leo-related to a god.
Vivian is a protector. After the Titian, when Chiron comes saying he has found 2 half-bloods, Vivian went with Coach Hedge. The three months that Vivian had with the 2 half-bloods, was amazing. But something terrible happens, her brother Percy has gone missing and she can't go and help find him. When a boy named Jason ends up an a Wilderness Field Trip, She, Jason, Piper and Leo, are sent on a quest to save the Queen of the Gods.
When secrets are revealed and truths are told, people realize that the next Great Prophecy has begun and a greater threat than the Titans are coming.
After the War with Gaia, Leo Valdez returned to camp half blood with Calypso.
Everything goes perfectly for about two weeks, nothing has even been better for Leo, However almost as soon as he thinks about how lucky he is, that's when everything goes downhill...
Calypso is summoned to Olympus, and is required to work for Hermes for two months as payment for her freedom, though that job comes with constantly being busy, so Leo can help but feel lonely. Even his friends had become too busy, Percy and Annabeth were busy with online school which they have been able to do from camp, Piper and Jason had become too lovey dovey (as Leo said) and Leo just felt like a third wheel. He couldn't iris message Frank to annoy him, since his job as Praetor kept him busy, and he tried to spend whatever free time he had with Hazel. speaking of Hazel, Leo couldn't speak with her either since she was either helping Frank with Praeter stuff, hanging out with Frank or kissing Frank.
So with all the feelings of neglect, Leo slips back into his old habits and runs...runs away from everyone.