Era of Red Police Disaster

The world after the nuclear war is barren and nature is full of alternative vitality! The world is shrouded in green, and the dense forest has become a paradise for all creatures to hunt and evolve! The former overlord "humanity" has become the lowest existence in the food chain, stubbornly and hard to survive! A thin young man with the main brain system of the "Red Police Empire Advance Base"! The gears of history have started to turn again, and everything starts from the "dirty valley"...