"Hours before Tia's first day of school, a mysterious UFO fell from the sky near the school grounds. The next morning, Tia must face the embarrassment of first contact with her new surroundings. Don't stop teasing her. At lunchtime, Tia takes refuge in the stamp club room to dine alone. The old substitute who runs the club sleeps on his chair. Leo is stuck in detention in the same room and c This is how he and Tia actually get to know him. In this first book, the janitor acts strangely, he appears possessed and he collects the scraps of food in order to feed a monster hiding in the dump. Leo and Tia lead the way. 'investigation. "- [SDM].