Following a catastrophic industrial event, the planet’s food and water resources become tainted. The affluent and influential withdraw into secure cities, where life continues unaffected by the starving populations outside their barriers. As the external world descends into chaos, Jacob, an idealistic resident, journeys toward the inner sanctum with a group determined to incite revolution, only for their train to come under attack. Seeking shelter in a deserted house, he discovers a warlord’s fortified arsenal and must battle for survival against humans who have become feral. Struggling to maintain his sanity, Jacob is compelled to commit increasingly brutal acts of torture and murder to stay alive.