During the eventful incidents at the evening gathering, the thoroughly honest noble daughter Constance Grail has made a pact with the spirit of the notorious criminal Scarlet. However, the price Connie must pay for this alliance is steep: she is to give her own life to exact revenge on all those who betrayed Scarlet and are responsible for her execution. But first, Connie must uncover who was involved in the intrigue from ten years ago. The first clue leads her to the chapel where Scarlet's acquaintance Lily is said to have committed suicide. But was it really suicide?.