At 14, Turtle Alveston roams the woods along the northern California coast. But while her physical world is expansive, her personal one is small and treacherous: Turtle has grown up isolated since the death of her mother. Her social existence is confined to her middle school and her life with her tortured and charismatic father, Martin. Then Turtle meets Jacob, a high-school boy who tells jokes and looks at Turtle as if she is the sunrise. And for the first time, the larger world begins to come into focus: her life with Martin is neither safe nor sustainable. Motivated by her first experience with real friendship and a teenage crush, Turtle starts to imagine escape, using the very survival skills her father devoted himself to teaching her.