Isabel Mann (Ellen Mullen), a teenager seduced by a violent sect of day-walking vampires, embarks on a bloody killing spree in the woods, aided by Alejo, the head vampire and her lost mother, an earlier recruit. Two detectives, Insp. John Witham (Neill Fleming) and Sgt. Paul Barrett (Matthew Toman), are investigating the missing classmates and the mysterious occurrences that lead them to Isabel's doorstep. As the situation spirals out of control, Isabel's violent tendencies become increasingly unhinged, fueled by Alejo's guidance and an unsettling connection to her mother.