Ji-soo finds out she"s pregnant and is glad she can finally earn some love from her husband but she discovers a video of her husband cheating in the car blackbox. She calms down and comes home early one day to find her husband cheating on her. However, the woman who is sleeping with her husband turns out to be her own mother (Lee Eun-mi-I). 

Ji-soo plans to take revenge and there is a man who is watching her in secret...