Speak clouds - white-maned horses? Well, well. One such horse flew over the city, after which, half of the population, instantly turned into bloodthirsty zombies attacking everyone for no apparent reason. But here is a mystery - the other half of the population has not undergone changes, but now it is forced to escape from insane killers. What happened? Why did some become the fiends of hell, while others did not? What to do with all this now? Answers to these questions will have to be found, professional shooter and literature lover Nikolai, martial artist, beauty Velislav, and funny old man San Sanych.