Heroes of Olympus (The lost Hero) (Rick Riordan)[paperback]

The Lost Hero is the first book in The Heroes of Olympus series by Rick Riordan. It introduces a new trio of demigods—Jason Grace, Piper McLean, and Leo Valdez—who embark on a dangerous quest after Jason wakes up on a school bus with no memory of who he is or how he got there.

Jason, along with Piper and Leo, is taken to Camp Half-Blood, where they learn about their godly parentage and the looming threat of a new enemy, the primordial goddess Gaea, who seeks to overthrow the Olympian gods. The trio must work together to rescue Hera, queen of the gods, and prevent a devastating war between the Greek and Roman demigods.

The book shifts between multiple points of view, offering a fresh take on the Percy Jackson universe while also connecting to the original series. Themes of identity, destiny, and teamwork are central to the story as the new heroes discover their powers and navigate a world of mythological dangers.