Born to teenage parents in a small town, sixteen-year-old Lucy Diamond longs for a traditional family, but with an immature working mother and a strict, frequently absent father she is mostly on her own. As she senses her parents' emotional distance, Lucy grows close to her childhood best friend, Kevin, who soon becomes her first sexual partner. After he abruptly moves away, Lucy struggles to make sense of her fledgling sex life, plan for her future, and help her mother start over again.