Seraphina, a princess of the Emeladine Kingdom, meets a miserable death, abandoned by those she trusted after being falsely accused. Opening her eyes, she regresses to a tragic moment in the past. Determined not to repeat the same failure, she decides to approach the Grand Duke, known as the 'Beast of Blood.' Monopolizing the favor of Rianid, the ice-cold Grand Duke of the North, she takes a satisfying stand against the fate and the world that abandoned her in this romance fantasy.