Graphite (played by Zhang Jiayi) and his wife Qi Xia (played by Wang Haiyan) have been married for many years, and the two have raised a son and a daughter together, however, behind the appearance of a peaceful life, Graphite hides an amazing secret. It turns out that Graphite's daughter (played by Fu Mei) is not Graphite's own son, but the daughter of drug dealer Huo Zhongzhong (played by Ni Dahong).