The book centers around three teen girls who were all groomed and then turned vampire by their common ex-boyfriend, who is over 100 yrs old. After turning each, he became emotionally abusive and then abandoned them for the next teen. They seek to stop him from turning a fourth girl (18 yo). He is explicitly identified as a stalker and serial killer. All four vampires (including their ex) theoretically remain at their teenage mental/emotional ages at turning. The main character was turned at 16 and is actually around 50. She becomes romantically an sexually involved with the antagonist’s would-be new victim, who is 18. She struggles with herself about the ethics, but her relationship with an 18 yo is overall portrayed favorably instead of as predatory. The protagonist feeds by seeking out and draining adult men who sexually harass teens. Several short scenes of attempted predation play out. Each time she is fully capable of dispatching her would-be assailant.