Who knew volunteering at the library would be this exciting?

Luna Madison is sure to have a boring summer. Volunteering at the library is all she has to look forward to while her friends are all off at cruises.
One day, Luna runs into a boy and starts talking to him but realizes there's something strange about him. he seems on edge about something
and late one night as she's shelving the books, Luna comes across a piece of paper with strange scribblings on it. She thinks nothing of it until she's confronted by two big men who want something she has