Lin Wan took her son Xiaoyu to marry Chen Mo and formed a family of four. She devoted all her love and resources to cultivating her stepdaughter Duoduo's dancing talent, treating her as her own. However, under the long-term indoctrination and control of her grandmother Chen Mu, Duoduo became mentally twisted and regarded Lin Wan as an "intruder" who took away her father's attention and family resources. Eight years later, Duoduo and her grandma carefully planned a "catch an adulterer" drama, using Lin Wan's normal contact with her work partner Zhou Yang to create the illusion of "cheating".
