There is truly no limit to Fortunatus Kermak’s ability to find himself in a variety of extreme circumstances - and get out of them profitably. It is not surprising that in the end the intelligence services of the planet Nyago, to which Fort arrived to buy a spaceship, became interested in such abilities. But instead, he will have to become an expert in emergency situations, and even work in tandem with the most unusual person that fate can bring together. In the underground metropolises of Nyago, high technology is mixed with the belief in doubles and werewolves, the military uses magic, and pirates send demons. The world is ready to plunge into chaos: something bringing madness and death is approaching, and Fort faces a difficult task - to stop the Beast rushing from the abyss... Who knows, maybe this is precisely his purpose?