Yu Mi-young, an ordinary housewife, loses her husband in a car accident. Two women come to his funeral and she is raged with his betrayal. She finds out in his diary that it wasn't an accident and plans a revenge against the two women, Sin-ae and Su-mi.
Kim Young-ha, president of Sindal Industries, runs over a female mannequin with his car. The mannequin looks exactly like Jung-im, a girl he killed a month ago. From that day on, strange things happen at Young-ha's house.
