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Heike Lerner leads a seemingly pleasant life in America after a damaged childhood in war-torn Europe. She is a stay-at-home mother, the wife of a successful psychiatrist, and her everyday routine is pleasantly quiet. Then one afternoon her four-old-son befriends a young girl by the lake, who vanishes suddenly under the water. Although Heike dives in after her, the girl is nowhere to be seen, leaving Heike wondering what happened to her. In an attempt to find answers, Heike seeks the help of paranormal television writer Leo Dolan after her controlling husband refuses to believe her. But then things take another turn when Heike's son disappears, and it's her husband who was the last to see him alive.