Inside the Prince of Jingbian's Mansion, the Prince has spent years stationed at the border while the Princess Consort, Su Tang, single-handedly manages the household finances and affairs. The mansion's cook Dahai, maid Xiaocui, steward Lao Wang, guard Zhao Zhan, and handyman Xiao Wu each perform their duties, sparking countless humorous and heartwarming everyday encounters. One day, a discrepancy appears in the account books, and the Princess Consort investigates to the very end, only to discover a benevolent act hidden behind it: everyone was rushing to make winter clothes for the frontline soldiers. Between pots and pans, account books and abacuses, Su Tang uses her wisdom and tolerance to resolve misunderstandings and unite people's hearts, portraying a mistress of the house who skillfully manages her home, cares for the country, and steadfastly upholds integrity, conveying the warm theme that "Though household matters are small, a righteous heart comes first."