The virus, which gradually leads to complete degradation of the human brain, has spread throughout all corners of the planet, while having the opposite effect on the overwhelming number of mammals. Understanding this fact forced humanity to exterminate the rudiments of competitive thinking in the name of its own meaning. In this cruelty-ridden world, where for a long time people managed to lose their remnants of sanity and survived only due to the densely populated cities, and the story of the protagonist will begin...