Once upon a time at school 2. The last guardian (ARM)

The school librarian Vachik mysteriously disappears, and in his place, Don Quixote appears in our world. The only witness to this event is twelve-year-old Hayk, who must now uncover the secret behind this occurrence, understand what mysterious book Vachik handed him before disappearing, and find out why the newly appointed school principal, Kogovyan, is determined to find Vachik and his enigmatic book at any cost.