When a mysterious illness robs people of the ability to sleep, virologist Daniel Foster races to uncover its source before society collapses. What begins as a medical crisis soon reveals something far more terrifying—an ancient secret hidden beneath the walls of his research institute. As the sleepless days pass, reality begins to fracture, shadows move where they shouldn't, and those infected vanish without a trace on the tenth day. With time running out and his own mind unraveling, Daniel must uncover the truth before he becomes the next to disappear.