Yu Fei (Li Qin) has lived in a single-parent family since childhood. She is positive, kind and optimistic. She does not have the paranoia of children who usually grow up in single-parent families. Her mother Yu Yue (Yang Yuting) is depressed and indifferent, but this does not leave a shadow in Yu Fei's heart. She always takes care of her mother as always. Born in a wealthy family, the spoiled Ye Lin (Kan Qingzi) has been held in the palm of her parents' hands since childhood, and love makes her petty. The disparity in status did not prevent her and Yu Fei from becoming close friends. After growing up, the girl's mind became more, especially when Ye Lin found that her beloved Zhang Hefan (He Rundong) was thinking about Yu Fei, and jealousy surged in her heart. In order to avenge her former sisters, she and her husband Xia Yuyang (Zhang Xunjie), who had abandoned Yu Fei, colluded and did everything they could. At this time, an explosive news confused them. It turned out that they were half-sisters who were swapped since birth...