Writer Yuriy Razzgonov, who was involuntarily turned into the super-agent Yasen, has stepped away from work. But the enemies of the Co-participants are preparing a new sinister conspiracy. The interests of powerful special services converge around what seem to be random and harmless people—our fellow citizens. Mysterious events follow one after another, and a serious threat hangs over the world.
And now Razzgonov is called back again to become Yasen and carry out the mission of the Co-participants.