A man awakens in a massive pit filled with dead bodies, with no memory of who he is or how he got there. He is rescued by a mute woman and led to a nearby house where he encounters a group of strangers, all similarly afflicted by amnesia. The group struggles to piece together their identities and the events that led them here as tensions rise and fear mounts. Scattered clues, such as personal items and scattered writings, suggest a deeply unsettling series of events. Trust within the group is tenuous, as they each begin to suspect one another of being responsible for their predicament.

The group explores their surroundings, encountering barricaded buildings and signs of a violent struggle, hinting at some catastrophic event. They are pursued by unknown, hostile forces, further complicating their efforts to uncover the truth. As they venture deeper into this nightmarish landscape, remnants of their memories slowly resurface, setting the stage for revelations about their pasts and the dire situation they find themselves in.