High flyers, a famous university, was admitted as a good husband for family honor. Now the gangster family has set up a construction company and lived a healthy and stable life. The son-in-law Dashu has become the president of the company. When the three brothers saw Xiaozhen, a new woman around Dashu, they felt uneasy that the company would be taken away by Dashu sooner or later, so they made a conspiracy like Chen Jinghe Dashu 10 years ago.
High flyers Park Dae-sook (Zheng Junhao), who graduated from the Law Department of Seoul National University, has a quiet life. She has maintained a stable relationship with her girlfriend for six years and her career is booming. However, all this changed after an inexplicable sex scene with Zhang Zhenqing (Jeong-eun Kim), the leader of the famous gangster "Three J Gang". It turned out that Zhang and his gang felt deeply inferior to their own quality and wanted to recruit a highly educated son-in-law for family honor. Uncle Park unfortunately entered the vision of the Zhang brothers. Since then, Zhang's three brothers used the incident of sharing a bed as an excuse to threaten and seduce the big book. On the other hand, Zhang's father is also interested in his future son-in-law. Uncle Park was so embarrassed that he had to be ordered to visit his future "father-in-law". Although Zhenqing was born in a mafia family, he was not violent. Under the attack of the three brothers' forced calculation and true obedience, the big book was shaken.