Halli Sveinsson always loved to hear stories about his ancestor Svein, who led the ancient warriors in a decisive battle against the Trovvs - monsters that devour people. After this battle, the Trovs retreated to the mountains, and the people living in the valley sighed calmly, although they were afraid to go beyond the line of mounds guarding their lands. However, Hallie doesn't really believe in the existence of the Trovvs. He himself, it must be said, is not at all like the ancient heroes: he is not very handsome and he is not very tall. But he is a master at all sorts of jokes and practical jokes, and one of these practical jokes cost him dearly, causing a chain of events that radically changed the fate of the young man and his relatives... For the first time in Russian! A new exciting saga from the creator of the Bartimaeus Trilogy!