According to the legends of the northern peoples, on the night of the fall of the Tunguska meteorite, the fiery god Agda descended to earth to punish the white people and return the land to its former owners - the Evenks. However, a strong shaman bewitched Agdy and imprisoned him in a charmed iron amulet, which has extraordinary magical powers. The one who takes possession of the amulet and releases the captive god will gain power over the entire world. Since then, numerous expeditions have been going through the forests and swamps in search of an ancient artifact. Masha Rusakova was not too interested in either the natural disasters of a hundred years ago or the fairy tales of the peoples of the North, until one day an unusual object fell into her hands...