It is a thrilling romance story that unfolds as the main character, who is possessed by a supporting character who does not even have a single part in the novel, unintentionally spends a night with the male lead in the novel. (Source: Korean = Naver || Translation = MyDramaList) Adapted from the webtoon "The First Night With the Duke" (남주의 첫날밤을 가져버렸다) by Hwang Do Tol (황도톨).