The world is a wasteland after the Cuban Missile Crisis blew up into all-out war.  The few remaining survivors have formed raiding parties to scavenge for scarce resources.  Meanwhile, an extinctionist cult called the Last Light has activated a colossal nuclear bomb that is counting down to detonation.  Skive and Retch are rival warlords who seek to either neutralize the bomb or find suitable shelter from its lethal blast which, for anyone outside, will be their last light.