In late 2013, a nuclear war occurred and Russia was targeted with atomic bombs, causing severe radiation across Moscow and forcing the surviving population to live underground in the metro stations. Those who did not seek shelter underground mutated into creatures known as the Dark Ones, who were left outside for the next 20 years.
In 2033, 20 year-old metro-born survivor, Artyom (Russian: Артём), learns from an elite soldier, or Ranger, named Hunter that a group of mysterious creatures referred to as the Dark Ones are threatening his station in the Metro. Hunter gives Artyom a Ranger token and tells him that if he does not come back, Artyom must go to Polis and see if they will help him.
When Hunter does not return, Artyom travels through territory occupied by Soviets, Nazi's Fourth Reich, and infested mutants. Once in Polis, he meets Miller, who agrees to help him. Along with help from others, the two head for the missile silo known as D6 to reactivate and destroy the Dark Ones.
After installing the laser guidance system, Artyom experiences vivid hallucinations induced by the Dark Ones. Learning that the hallucinations were the Dark Ones peaceful attempt at contact, Artyom destroys the laser guidance system.
Metro: Last Light
It is the year 2034. Beneath the ruins of post-apocalyptic Moscow, in the tunnels of the Metro, the remnants of mankind are besieged by deadly threats from outside – and within.
Mutants stalk the catacombs beneath the desolate surface, and hunt amidst the poisoned skies above. But rather than stand united, the station-cities of the Metro are locked in a struggle for the ultimate power, a doomsday device from the military vaults of D6. A civil war is stirring that could wipe humanity from the face of the earth forever. As Artyom, burdened by guilt but driven by hope, you hold the key to our survival – the last light in our darkest hour...