Having believed for a long time that she had a happy marriage, Mi-hie is shocked when she is contacted by her husband's former gilfriend, Mi-kyeong who claims that she and Mi-hie's husband are still involved. She also informs Mi-hie that her marriage is simply a matter of convenience. Mi-hie, distraught, gets into a car accident and becomes paralyzed from the waist down. Her sister, Yu-hie, comes to nurse her but begins an affair with Mi-hie's husband. Yu-hie comes to believe that the best way to deal with this situation is by murdering Mi-hie.