Gu Shan, who was abroad, decided to return to China to reunite with her twin sister Gu Li, but suddenly learned that her sister had died in a car accident. When Gu Shan rushed to her sister's house, she unexpectedly caught her brother-in-law Huo Xizhou having an affair with her sister's best friend Su Man. Gu Shan immediately realized that her sister's death in a car accident was by no means simple.To investigate the cause of her sister's death, Gu Shan decided to disguise herself as Gu Li, return to Gu's Group in Gu Li's identity, and lurk beside Huo Xizhou. However, how could the shrewd Huo Xizhou believe her identity? Faced with Huo Xizhou's doubts and his repeated schemes to expose her, how should Gu Shan overcome all obstacles, prove her identity, take back Gu's Company, and find out the real murderer who killed her sister?
