Following a nuclear war, life on Earth has all but come to an end. Solisvita has placed a small group in an ancient cavern—equipped with a 180-day supply of water and provisions—tasking them with locating a rare "ore" essential for producing "Geneterna," a treatment designed to grant humans genetic immunity to radiation. Once the mission is complete, they are to be relocated to protected "Fortress Cities." However, communication with headquarters is severed, their water supply is running dangerously low, and with only eight days left in the mission, Emre—the project lead—takes his own life. Meanwhile, a mysterious stranger arrives at their door, sharing legends that hint at a hidden water source deep within the cavern. As trust begins to unravel, each member of the group is forced to confront the true cost of survival and the real nature of Solisvita—the organization they once believed to be their savior.