Ten years ago, the daughter of six years of Sarah Mason, who disappeared during a walk in the park. Small was never found, and Sarah finally brought together the pieces of their shattered lives and sugui forward as best it could. One evening in summer, when entering your home, the phone rings. By lifting the handset, hears a voice of that girl, terrified, whispers: "Help me Mommy." Communication is cut, but not before they Sarah, horrified, has recognized the voice of Lexie.