Revenge of the Evil Librarian - Grand Format

Last year, Cynthia saved her best friend, as well as the entire student body, from Mr Gabriel, the demon librarian. Now that all that demon stuff is over, Cyn is ready to have the best summer ever at theater camp (!) with her former crush and now boyfriend (!!), Ryan. Once she gets to camp, though, Cyn realizes that all the demon stuff might not be as over as she thought. But at least any new demons can't possibly be as bad as Mr Gabriel.
And it's not like he could come back from the dead to seek his terrible revenge... right ?