On the once-idyllic Oogami Island, an outbreak of the Unknown Level 4 contagion has disrupted everyday life and stirred powerful, uncontrollable urges among the residents. Three young women, Hyuuga Natsu, Ochi Akari, and Hanazawa Airi, take shelter inside a sports facility, hoping to wait out the spreading crisis. As the epidemic intensifies around them, the trio must confront the altered behavior of those they encounter and find a way to endure the mounting tension. Their ordeal marks the beginning of a harrowing struggle for safety.
