Cooper Harlow always knew what the future held for her, a life of fighting crime. In her world she knew right from wrong until she fell in love with what she was supposed to kill: a vampire. When her enemy Michael kidnaps her younger sister, Cooper learns an interesting secret that could not only destroy herself but the whole world as she knows it. Frustrated about finding out the truth, Cooper sets out on her last job: bringing her sister home and protecting the world as she does it.