Min-joo and Ji-hoon who are lovers, try to live together but face severe opposition from their aunt Jeong-sook, so Ji-hoon goes to her house to negotiate with her. Jeong-sook and Min-hee’s older sister who met Ji-hoon, fall for Ji-hoon’s good looks and allow him to live together, but forbid him from doing so. Shortly after living together, Min-joo goes on a business trip, and the two women begin to reveal their sinister feelings to Ji-hoon, who is in a difficult situation…