In a remote forest, two sisters, Nell and Eva, live with their father in a secluded house that runs on a generator. Their lives take a dramatic turn when a widespread power outage disables all technology and communication. The family's resources dwindle as they grapple with the isolation and uncertainty of their situation. The sisters' reliance on their father grows as he tries to fix the generator and maintain a sense of normalcy, but tragedy strikes, leaving Nell and Eva to fend for themselves.

With their father gone and the outside world still in darkness, the sisters struggle to survive. They face the challenges of finding food in the untamed wilderness, protecting themselves from intruders, and dealing with the psychological toll of isolation. Tensions rise as they confront their fears and lean on each other for support. The film focuses on their resilience and adaptability, showcasing their journey of survival and their unwavering bond amidst the unknowns of their perilous environment.