Velvet – a woman who is in prison. Devouring monsters called “daemons,” she has lived in confinement for several years. Velvet has only one purpose in life. To get revenge against the man who leads the Abbey, an organization of exorcists who possess the power to battle daemons. To bring down the man they call their savior, Artorius Collbrande. One day, Artorius’ former partner, a Malak known as Seres, appears before Velvet to try to help her escape.