Every night at exactly 3:17 a.m., the entire town of Ashford Hollow, Oregon, falls asleep at the same instant - mid-sentence, mid-step, mid-thought. No one remembers it happening. No one wakes up tired. But something does wake up. When Ethan Blackwell starts finding fresh mud on his boots, blood he can't explain, and messages from himself he never sent, he realizes the town isn't just sleeping - it's being worn. Something is using their bodies to patrol the streets after the lights go dark, and whatever it's guarding, it doesn't want found. With deputy Mara Whitlock chasing a string of impossible night-shift crimes and outsider Daniel Cross digging into the town's buried history, Ethan has less than nine hours before the next 3:17 a.m. - and no idea if he'll be the one walking, or the one being worn.