Da-hee gets married to Min-soo who is older than her. Thanks to him, he also gets a son who is not too old, Jae-hyuk, who she tries to get acquainted with, albeit awkwardly. After staying with Na-yeon, she suddenly has to meet Jae-hyuk, and Na-yeon has a date with Jae-hyuk. Min-soo is surprised to find three people coming back home from a date. It made him angry to see his son with two women. Right away, Min-soo seeks Da-hee and asks about Na-yeon. Na-yeon met Min-soo secretly. However, Da-hee who is aware of Min-soo and Da-hee's relationship, shares this fact to Jae-hyun.

Min-soo and Jae-hyeok is in a good father-and-son relationship. But one day, Min-soo brings Jae-hyeok's young stepmother, Da-hee. Jae-hyeok leaves home to wander around, ran into Da-hee's friend, Na-yeon, and had a little talk. Na-yeon calls Da-hee... Da-hee goes home with Jae-hyeok, and Min-soo doesn't care much. Jae-hyeok tells Da-hee how he feels. Meanwhile, Min-soo who disapproves Da-hee and Jae-hyeok's relationship, calls Na-yeon to kill some time. And Na-yeon who is worried about Da-hee and Min-soo crafts a new plan...