In the scorching desert of New Mexico, vampire Alex is a shadow of her former self. Once a dedicated agent for the secretive organization known as Shade, she now spends her nights in a haze of alcohol, trying to drown the haunting memories of her past.

Her self-imposed exile is abruptly interrupted when the local sheriff, aware of her unique skills and past, pulls her into a case: werewolves are disappearing without a trace. Alex's keen senses and experience with supernatural beings make her the only hope of solving the mystery in the rural town.

As Alex delves deeper into the investigation, she is forced to confront her own demons. The case becomes more than just a search for the missing werewolves; it becomes a journey of redemption. She enlists the help of Dr. Mariana Nava, a brilliant and beautiful genetic scientist. Mariana's sharp mind and warmth slowly begin to crack the wall Alex built around her heart.

As Alex and Mariana grow closer, the vampire must decide if she can trust again and allow herself to feel something other than pain and regret.