Nan Xuanxu is a rising real estate tycoon in Shanghai. He is in his prime, has no wife and no children, and is surrounded only by Yu Jiayin, a promiscuous woman with a lively personality and good at sociability. However, the two are just close friends and are not in love. Jia Yin has a younger brother named Yu Shanghua. When he was young, his family was poor and he was sent to a theater troupe to learn skills. When Xuan Xu was 21 years old and Jia Yin was 19 years old, they met through a misunderstanding and became friends. At that time, Xuanxu was already a moderately successful businessman. He lacked a female companion, so Jiayin helped him socialize. Xuanxu sent 12-year-old Shanghua to school and funded his studies, but they never met again. Five years later, the grown-up Shang Hua met Xuan Xu again, and there was no longer a complicated and complicated relationship between the two.