Lily moves to her new house, but the new neighborhood is scary and unfamiliar. Her room is in the attic and the kids at school are all strangers. And as if that wasn't enough, she has to follow the instructions given to her and visit the "down" school. There, in catacombs, with only one classmate and a strange teacher, she must train as quickly as possible because danger lurks. Fortunately, Alex visits her soon and together they manage to face everyday life. Together they are stronger. But they are certainly not ready for what is about to happen. Who could be? One single event is enough to change everything…