To cover her seriously ill father’s enormous medical bills, ordinary young woman Lin Xiaoxiao signs a one-year “contract marriage” with Gu Tingchen, CEO of a tech empire who needs to deal with pressure from his family to marry and maintain his public image. She moves into his cold, sprawling penthouse, where she faces not only a vast class divide but also a demanding housekeeper, a “former lover” waiting to make trouble, and complicated family dynamics. She must play the role of “Mrs. Gu” and handle every challenge that comes her way.