Blue Bloods are the highest level of elite modern New York society. The teen Blue Bloods attend Duchesne School, enjoy the most fabulous parties and share a dark secret. Blue Bloods are vampires; they literally bleed blue blood and sprout fangs when hungry. But that doesn't stop them from partying in this second installment of Melissa de la Cruz's fantasy/horror series, which has even more mysterious secrets and action than its predecessor. 
 Schuyler Van Alen and her destined human assistant, Oliver, begin the book by traveling to Italy in search of Schuyler's outcast grandfather. Her grandmother just passed away in this cycle and advised her to get help from her grandfather. She finds him, but he doesn't seem to be interested in helping her fight the Silver Bloods, who have tried to get rid of the Blue Bloods throughout history. No one believes her insistence that they're back, but she knows that some teens and her grandmother had help dying from the Silvers. 
 Mimi and Jack Force are leading the Blue Bloods in getting ready for the traditional Four Hundred Ball. They will be presented officially at the ball, with their vampire names and identities. Mimi begins to plan an exclusive afterparty for the teen vampires, but she is most looking forward to letting everyone know that she and Jack are destined to be together from history. He may be attracted to Schuyler, the half-Blue Blood, but in each life he and Mimi have ended up together. 
 Bliss, the Blue Blood who moved from Houston with her Senator father, finds herself in strange locations. One time she wakes up at the bottom of a lake, and an unknown vampire helps her. She blacks out more and more frequently and doesn't know why. She still feels that Dylan, her boyfriend who disappeared in the first book, is alive. He must be the one helping her, she thinks. On a modeling gig with Schuyler, she feeds for the first time with a crew member, only to regret it as they then share a bond. 
 At the afterparty, Schuyler is kissed by a masked vampire, but she thinks it's Jack. He has ignored her ever since she announced her feelings that the Silver Bloods have returned. She grows weaker and weaker as vampire and human mixed bloods fight in her for dominance. It becomes clear that she must feed for the first time on a human. She wants it to be Oliver but wonders if that will change their friendship forever.