"Metro 2033" is set in a world devastated by nuclear war, where the few remaining survivors are forced to live in the Moscow metro system. The story follows Artyom, a young survivor who embarks on a perilous journey to the VDNKh station, seeking a mythical pre-war medicine that could potentially save humanity. Along the way, he encounters various factions, each with their own agendas, and must navigate the dangers of the underground world.