Absent. Heroes of Olympus

Lila wakes up on a bus with no memory next to a boy she has a weird connection to.

Meets two kids who think they're friends and gets taken to a camp for demigods.

Where she is sent on a dangerous mission to save a goddess and get her memory back.

Disclaimer. I do not own any of these characters or story lines except Lila. All credit goes to Rick Riordan.

Book on in The Castellan chronicles