In the TV series Good Sir, the global financial crisis has affected the catering market in new york. Chef Lu Yuan makes a living by making cheap buffets in Las Vegas. Because of an accident, he brought his best friend's daughter back to China. After unremitting efforts, Lu Yuan touched Peng Jiahe, his best friend daughter in the rebellious period, and his ex-wife Gan Jing found true happiness and no longer needed her care. With the efforts of pursuer Jiang Lai, the relationship between Lu Yuan and his father was eased. After completing all the tasks of returning to China, Lu Yuan decided to return to the United States. Jiang Lai chased him to the waiting room and made a deep confession to him. Lu Yuan was moved by it, and finally they got married.

At the end of the story, Lu Yuan finally got together with Jiang Lai. Jiang Haokun's sister, Jiang Lai, is a bachelor. She once had a lover, but her brother Jiang Haokun intervened and died. Since then, her heart has been closed, and she hates Jiang Haokun. Now that her love has been halved, it must not make the "enemy" feel comfortable. Therefore, she sneered at Gan Jing, who was about to marry into the Chiang family, and always wanted to turn them over, but mistakenly thought that she always did her best.