A set of posters for a TV series - Just a relationship between fiancées - is shared with everyone. It tells the story of the sudden disappearance of Gu Manman, the fiancee of Su Yu, the daughter of the Gu family, the chairman of Max. Su Yu keeps searching to no avail, and the Gu family master also becomes seriously ill because of this.Su Yu accidentally meets Qiu Mai, a post-it girl who looks exactly like Gu Manman.