Gangster boss Jin Wanji was in an accident and his life was at stake. In the crisis, Jin asked to bring a man named Yin Douxian. Douxian (Song Kanghao) was once a capable general in the organization, but he had retired many years ago and lived in seclusion in a coastal town to learn cooking. However, this man with a dark past will eventually return to his original world. With the news of Jin Wanji's death, Douxian's heart was in turmoil, and the topic of the boss's successor was also debated in the organization. On the other hand, the beautiful girl Zhao Shibin (Shin Se-kyung), who was learning cooking with Douxian, was actually a killer sent by an organization to monitor Douxian and wait for an opportunity to assassinate him. However, in the process of getting along, Shibin's cold and blocked heart door was gradually opened by Douxian, and her feelings also quietly changed. In the turbulent season, the fate of each other is out of control...