Huo Zhi (Jiang Kai Tong), who grew up in an orphanage, happens to save the rich heir Jiang Cun (Ronald Zhai) when he gets into a car accident. Jiang Cun falls in love at first sight with his savior and tries to pursue her. However, he mistakenly pursues her twin sister Qin Ying Su (Jiang Kai Tong) instead. When Huo Zhi and Ying Su meet and recognize each other, Ying Su pleads her sister to pretend to be her for a while, so that she can treat an illness in secret. Huo Zhi agrees and enters the Jiang household, however, an accident happens and she loses her memory. Thereupon, Huo Zhi turns into her old naive and simple self. Jiang Cun is happy about her character changement and becomes more considerate and loving towards his wife, but what will happen when he discovers the secret?
Set during the Republican era. Dong Fang Jing Qi (Janine Chang) was brought up by her foster father who taught her about medicine. Before he dies, he tells her about the family’s enemy. To get revenge, she starts working as a maid in druggist Du Yuan Shan’s home. However, when she’s about to reach her goal, Du Yuan Shan tells her the truth about the events back then. In the meanwhile, Du Yuan Shan’s son Du Ming Hai (Liu Huan) develops feelings for Jing Qi.