In a world where power often corrupts the nobility, House Grail stands apart with its commitment to honesty and righteousness. Constance, the youngest daughter of this exceptional family, upholds these virtues fervently, always striving to do what is just and aid the downtrodden. Despite her unwavering moral compass, Constance faces betrayal when her fiancé betrays her trust. Falsely accused by her lover's paramour and abandoned by society, Constance finds an unlikely ally in the vengeful spirit of Scarlet Castiel. Scarlet, wrongfully executed years ago for a crime she did not commit, seeks retribution against those who framed her. Bound by their intertwined fates, Constance and Scarlet embark on a quest for justice and revenge, unraveling deceit and treachery in their pursuit of truth and vindication.