Cheng Qingmiao and Pei Huaiyu secretly fell in love for three years, but they broke up heartbroken because of his "just for fun". Seven years later, she changed her name to Ni Wu and raised her daughter Ni An, who has a heart attack, alone. Pei Huaiyu became his daughter's attending doctor. The two met many times. Eventually the truth is revealed and the two get back together. Adapted from the Tomato novel "The Fog", written by Chen Ruozhou.
