In Montana’s Bitterroot Valley, young Ruthie Fear sees an apparition: a strange, headless creature near a canyon creek. Raised in a trailer by her stubborn, bowhunting father, Ruthie develops a powerful connection with the natural world but struggles to find her place in a society shaped by men. As she comes of age, her small community begins to fracture in the face of class tension and encroaching natural disaster, and the creature she saw long ago reappears as a portent of the valley’s final reckoning.