For a certain reason, Diana married the elderly Marquis Caspell and spent her days in a peaceful and happy marriage. However, Caspell suddenly lost his life in a carriage accident, leaving Diana a widow at a young age. Drowning in grief, she decides to give everything to Caspell’s grandson Albert and his lover, and to follow after Caspell in death. But what was revealed was a shocking will. The condition for inheriting the title and estate was “a one-year marriage between Albert and Diana.” To respond to the trust of the late Caspell, Diana accepts the contract marriage, vowing in her heart to watch over Albert until he can stand on his own as successor. On the other hand, Albert, who knows of Diana only through rumors calling her a “villainess,” suspects she is after the inheritance and treats her coldly. Yet, as he witnesses Diana’s devotion—supporting him even while hurting herself—Albert’s heart gradually begins to waver, and before long, he finds himself drawn to her… Hearts that miss each other, wounds of the past, and a national conspiracy surrounding the inheritance intertwine, leading the story to unexpected developments. A contract marriage that blossoms into a heart-shaking dramatic love romance.