Seren Loneheart falls in love for the very first time with a boy who has a dark secret. She soon discovers he is a prince who rules over The City of the Broken, which has a population of heartbroken and outcast people. He informs her that he wants her to become a citizen of his city as he believes her to be lonely and unhappy, but much to Seren's delight he also wants to be her boyfriend as well. The pair embark on a dark fairytale romance that results in Seren finding happiness for the first time in her life, but Calix informs her that she needs to remain 'broken' to be his girlfriend. Can these young lovers survive all this turmoil that threatens both their relationship and Calix's crown? Will Seren succeed in healing Calix's heart and ending his determination to remain unhappy for the sake of duty?