Betrayed by her werewolf lover and left on the brink of death after falling from a height, human girl Marian is unexpectedly saved by the mysterious vampire noble Cillian. But his rescue comes with a price — in exchange for the power to seek revenge, Marian must sign a “100-Night Blood Contract” and become his exclusive blood slave.
Though Cillian appears cold and ruthless, treating Marian as nothing more than a contract possession, he repeatedly protects her from danger and destroys anyone who dares hurt her.
