Modern corporate worker Tang Yu transmigrates into an older maid of Jiang Lingchuan, the second young master of the Marquis's brocade-guard estate. Wanting to keep a low profile and lie flat, she is instead targeted by the cold and ruthless second young master, Jiang Lingchuan. As his wedding approaches and the future mistress closes in step by step, Tang Yu finally realizes his favoritism cannot save her. Thus, while acting obedient and sucking up to him, she secretly saves money, paves the way, and leverages power to protect herself, all so that one day she can successfully save enough money and run away out of the estate. But just as she prepares to escape, Jiang Lingchuan completely falls in love with her, even beginning to incorporate her into his future. One desperately wants to stay, one single-mindedly wants to leave; this relationship, born from a misplaced identity, finally ushers in true out-of-control chaos.