"Posters plastered across the thirteen kingdoms are saying that Briar Rose has been murdered--and the four Princes Charming (Prince Liam, Prince Frederic, Prince Duncan, and Prince Gustav) are the prime suspects. In a desperate attempt to clear their name, they discover that Briar's murder is just one part of a nefarious plot to take control of all thirteen kingdoms--a plot that will lead to the doorstep of an eerily familiar fortress for a final showdown with an eerily familiar enemy."-- Publisher's description.