Once brave soldiers ready to fight and die for America, you and your unit have awoke from cryosleep to find centuries have passed and the devastation of the Great War irreversible. Intended as a cradle of humanity in case of a natural disaster, the facility where you have slumbered for centuries, where thousands others sleep and await to awaken and rebuild the world is being preyed upon by hideous cannibals.
During the Fall, the great glittering city of Chicago, now known as the Feeding Grounds, was never bombed by enemy forces. Stories have always maintained this was because of some treasure hidden deep in the city. Now, elders of the city of Bastion believe they know where this treasure is. Your mission: make your way through a city crawling with ghouls and worse and find a treasure even the ancients covet.