Su Yan is an independent brand planning director who bought a spacious apartment in a prime downtown school district before marriage, paying for it in full with her own money and her parents' help. After getting married, she never expected all four members of her husband's family to set their sights on the property, which is not registered under Jiang Chen's name. Using a few days' stay as an excuse to tide them over, they forcefully move in with their entire family and secretly make six spare keys. Her sister-in-law, Jiang Yao, constantly freeloads at the apartment and rummages through Su Yan's walk-in closet. Meanwhile, her in-laws secretly transfer away 280,000 yuan from her premarital investment savings, and even Jiang Chen's entire salary is quietly redirected to his younger sister's account after the wedding to save up for her dowry.