The heroine is the daughter of a wealthy family, but unexpectedly one day a woman unexpectedly comes to her door and claims that she is the real daughter and the heroine is the fake one. However, the woman does not know that the heroine was adopted from an orphanage by her parents. In order to expose the woman's true identity and find out the murderer behind the scenes, the heroine's family begins to accompany the woman in a large-scale acting performance.
