She's getting married today— She has reincarnated as Evelynn, the obsessive romance novel’s heroine, and today is her wedding day. Born into an ordinary family, Evelynn was destined to marry into the ducal house of Diffrin due to the late duchess’s will. However, her groom, Diffrin, remains cold: “Even after the wedding, nothing between us will change. Don’t expect anything.” Seeing his attitude, Evelynn makes up her mind: "No matter what happens, I’ll divorce him two years from now, after he inherits the duke’s title." But contrary to her resolve, her relationship with Diffrin begins to flow in unpredictable ways.....?!