David's world has been destroyed by an apocalyptic event known as The Crisis, forcing him to rely on survival skills he learnt as a child. David has sought refuge in a tent on the outskirts of the forest, isolated and alone. Soon after, another survivor, Mary, appears and immediately begins questioning David's tactics, finally putting them in the crosshairs of "Those Who Walk In Darkness," unseen entities who may or may not be responsible for The Crisis.