Marianne von Langston has just woken up as a baby in a new world after dying in childbirth. For some reason, she seems to have all of the memories from her past life. In this new life, she is glad to have been born in a stable home with a loving older brother who would protect her from anything. Well, anything that is, expect an arranged marriage her distant parents set up for her. On the day she finds out about her engagement, she goes to confront her parents when her home is attacked. Her parents and precious brother die, and just as she is about to do so, Duke Roman de Wintermour arrives with his knights to save her. Duke Wintermour, her fiance. He whisks her away to his home in the capital, where a battle between the Crown and Temple is just beginning and a second demon war is looming. But all Marianne can focus on is that she could not save her brother, and the revenge she so desperately wants.