The drama tells the story of the fierce survival and success of a female slave in the Joseon Dynasty. The real story of a woman whose name, identity, and even husband are all fake.​

Lin Ji-yeon plays the role of Gu De, a slave born to slave parents. She ran away after a conflict with the bad master she served, met a new kind-hearted lady, and became the adopted daughter of her family.But the kind-hearted lady suddenly died, and Gude threw away his name and lived his second life as a brand-new lady.​

Qiu Yingyu plays the role of Song Ruiren, a son of the superintendent's house. He is very romantic in the face of love, regardless of his trivial character. He and Gude changed after they were entangled in various incidents.