Already twice a mysterious fireball descended into the deep taiga, forming a mysterious zone in the landing area. From distant Petersburg, a young scientist, an enthusiast Kairov, is going to the zone. Hearing that in the zone called "Devil's Ring", full of gold, his random companion Kuzmin, a thief and an adventurer, stole the looted jewelry together from his accomplices, sets off for Kairov. He is not afraid of the local claims that "damn gold" does not bring good to anyone. Nor does it stop that on the heels of ex-friends who are offended in their best feelings by the insidiousness of their comrade and who are ready to deal with him, with his learned companion, and with each other too, just to get hold of jewelry and gold.