Sixteen-year-old Margo Crane, is a beauty whose unflinching gaze and uncanny ability with a rifle have not made her life any easier. After the violent death of her father, in which she is complicit, Margo takes to the Stark River in her boat, with only a few supplies and a biography of Annie Oakley, in search of her vanished mother. But the river, Margo's childhood paradise, is a dangerous place for a young woman traveling alone, and she must be strong...