Dr. Emerald Bruttenholm is the sole survivor of the Blackwood massacre and is taken to the BPRD to help them investigate the attack. She takes the meeting with the paranormal creatures surprisingly well because deep down she has secrets of her own. She is scared to let anyone know but when she finds herself in the clutches of Prince Nuada, there is no escaping.

He hated her, and that suited her just fine. She hated him, and he made sure to encourage her hate. But, as the chessboard ever so slowly tilts, their encounters become more and more frequent, their pieces sliding them closer and closer... two knights playing against each other. They just might collide if they do not fall headfirst over the edge.

The last thing she expected after quiting the military was to get a phone call from some agency that promised they could 'help her' with her ability. The second to last thing was falling for a red demon that always seemed to be able to pissed her off.