When starting the Manhattan Project, the US government discovered that similar developments in the USSR, Japan and the Third Reich were going on much more intensively than originally expected. It was decided to take a risk and make a breakthrough using... What they used there is still unclear, but at the end of December 1943, America ceased to exist. All groups sent to explore North America disappeared shortly after landing on shore. The confused participants in the World War froze, and somehow negotiations for peace began spontaneously. In 1945, the irreconcilable enemies were united by another threat. From the infected continent, huge flakes of living abomination floated across the oceans, inhabited by terrible cripples - mutants. After their extermination, the Pacific and Atlantic fronts were opened - fortified thin strips of the reclaimed North American coastline, designed to contain the spread of the infection. Two privileged "Mikado pilots" are awaiting their first rush to the front.