In the year 2034, a nuclear war has turned the world into a post-apocalyptic wasteland. In Moscow, the tunnels of the Metro have become a new home for the former inhabitants of the city. Within the catacombs, they fight for their survival, fending off hordes of hideous mutants born from the toxic atmosphere, as well as other factions desperate to take control of what little hospitable land remains. As they fight, they also search for a doomsday device that could be the key to their victory. A civil war is inevitable. During these dark hours, the players will embody Artyom, and become the last light for all of mankind.