Due to a “deadly disease” spreading throughout the imperial capital, Fiamma, a former count’s daughter, lost her family and had her title taken away. Two years later, a miracle cure was finally developed, but it was just a step too late, and she lost her life. “If only we had joined forces with the rival Cornaro family, everyone wouldn’t have had to die,” Fiamma laments. Suddenly, she finds herself back at age 18, two years before the disease began to spread. To save her beloved family, she decides to marry Alfondo, the next duke of the rival family! “I love you.” It was supposed to be a fake marriage that began with a life-threatening seduction… but who would have thought she would end up confused by the cold-hearted duke’s unexpected affection.