Claire Maurice, the eldest daughter of a poor marquis family, receives a surprising proposal from Illere Edel, the most eligible young duke in the country: a contract marriage for one year, for a certain reason.
Though shocked by the sudden offer, Claire accepts and becomes the duchess. However, she is immediately subjected to bullying from the servants just days into their marriage, but Claire, having endured years of mistreatment from her own family, refuses to be discouraged. She calmly overcomes each problem that arises and gradually gains allies. At first, Illere sees Claire as an odd woman, but before he knows it, he finds himself unable to take his eyes off her... Thus begins a sweet, slow-burning love story born from a sham marriage.