Ghosts of Witchbor Academy

With the first day of spring, Iris's life has changed. Now she is a student at the ghostly Witchbor Academy. But the first days in a new place are difficult. Iris is the only one who has not received an animal companion, she was cruelly teased during the initiation, and the strangest thing... students have started to go missing at the academy!
Iris is convinced that the walls of the huge ancient castle hide something, and the wandering corridors lead to doors that are not on the map. What strange sounds are coming from the dark basement? And what do the teachers not want to tell? But the main mystery that needs to be unraveled is where do the other ghosts disappear to?