“I won’t forgive you! If I could do it all over again… This time, I’ll—!” Born the illegitimate daughter of a noble family, Diana was scorned by her family and even the servants. One day, she was poisoned by her half-sister Irene, the legitimate heir of the ducal household. Diana had endured everything quietly—until the moment she died, filled with regret and hatred. But when she opened her eyes, she had returned to a year in the past! She died once. What’s there to fear now? With vengeance burning in her heart, Diana swears to take back everything that was stolen from her. To uncover the dark secrets of the duke’s family, she joins forces with Daniel—her sister’s fiancé.