The spring of events is twisting ever tighter: a mysterious epidemic, a virtual war between groupers and, finally, the explosion of elevators - the only transport connecting the Moon with the Earth and the colonies... Who is behind all this and what to expect next? These and other questions will have to be answered by Misha McPherson, an officer of the lunar police (in other words, the pentovka). Misha is convinced of the seriousness of the intentions of the invisible enemy by a couple of attacks in virtual reality and a blaster beam that, by pure chance, passed by - in an ordinary one. But lunar pentas never give up!