Heroes of Olympus: The Lost Hero

The first book in Rick Riordan's Heroes of Olympus series follows Jason, who wakes up with no memory on a school bus with two teens claiming to be his girlfriend and best friend. The story introduces a diverse cast including Piper McLean, a Cherokee demigod dealing with her father's financial troubles, and Leo Valdez, a Latino son of Hephaestus with fire powers. The quest involves reuniting Greek and Roman demigods to prevent an ancient evil from rising, exploring themes of identity, friendship, cultural heritage, and finding one's place in the world.