For the sake of a stable life, the heroine hands her salary card over to her mother-in-law, who takes complete control of the family's income and expenses, restricting their daily spending at every turn. Although it appears that she has surrendered her entire income, she has already made careful plans, separating her basic salary from her commissions and allowing her mother-in-law to see only her meager base pay. Faced with her mother-in-law's habit of saving money at all costs, cutting household living expenses, and applying double standards when managing the family, the heroine refuses to keep giving in. Instead, she lays down clear rules and cleverly turns the tables, firmly establishing the boundaries she will accept in family relationships.