2 months have passed since the attack on the Chernobyl Nuclear Power Plant. The mysterious Monolith group managed to recover from its losses and again blocked the path to the Center of the Zone by launching the Brain Burner. Mercenaries have intensified their activities, and unknown stalkers are increasingly going to abandoned laboratories, hoping to find information about the O-Consciousness project. Professional intelligence officer Yaroslav, in a team of the same specialists, will have to unravel this tangle of events and find out what role “Monolith” plays in all this.