Zhang Guilan is reborn on the day her daughter-in-law Xiaoyue moves in to establish "household rules". In her past life, she and her husband were exploited by her son Wang Yang and Xiaoyue, who hid behind "boundaries"—they ignored calls for help when Zhang’s husband had a heart attack and even seized their house later.
This time, Zhang refuses to give in. She sets her own boundaries: demanding the return of red envelopes from relatives and asking the couple to move out. Faced with their tantrums, trespassing and online slander, Zhang fights back firmly—she cuts off ties with Wang Yang and notarizes her inheritance.
Eventually, Zhang and her husband live a happy old age, while Wang Yang and Xiaoyue end up divorced and down-and-out.
