Fifteen-year-old Ana has a good life—she has friends and a boy she likes and a kind mother—but still, she's haunted by her past; she knows that she lived once before as a girl named Emma, and she still misses her old family. When, by chance in her life now, Ana meets a woman she knew in her previous life, a terrifying memory flashes through her mind of a young girl drowning. Was Emma responsible? And should Ana pay the price? Consumed by guilt, Ana sets out to find out as much as possible about the person she was before and what she had done, only to discover that the family she misses so deeply had dark secrets of its own. To come to terms with her life now, Ana must figure out how to let go of the past.