Zhao Xiulan, chairwoman of Dingjian Group, has lived for years under an assumed identity as a female construction worker to toughen up her son. On the day of his wedding, she is suddenly involved in a car accident. After being discharged from the hospital, she discovers that her marital home has been taken over by her in-law, Jinfeng: the locks have been changed and her personal belongings have been removed. Her son, however, keeps urging her to give in. Heartbroken, Zhao Xiulan withdraws the property and shares she had originally intended to give the couple, drawing clear boundaries through her actions. As her true identity gradually comes to light and the family goes through several conflicts, her son and daughter-in-law finally mature and come to their senses, while Jinfeng learns to respect her limits. Both families eventually return to a peaceful, stable daily life with clearly defined boundaries.