The House of Diversity. A boarding school for a variety of different species Xeria finds herself at when "home" is no longer an option. Most of the students are there because they're either running away from something, or running to something, but for Xeria she's there because she's looking to find something. Fortunately her best friend, and fellow mermaid Misty is transferred with her and they enter this new world together. Neither of them have ever been so completely mixed up with other species before, and to be honest, Xeria finds it quite refreshing since she only ever spent time with her own kind, dragons. However the school that was promised to be a safe place, is not as safe as it would seem. As the dramatic lives of the teens at Diversity unfold, so do horrific challenges. As Xeria meets new people and finds the friends that will change her life, she also meets enemies that are sure to try and hurt them. Xeria and her newfound friends will form an unbreakable bond, but will it be strong enough to withstand the battles the mysterious school throws at them?
In the epic conclusion to the Devil's Deal series, Freya has one final chance to discover the full potential of her own power, and to use it to restore balance in the universe - once and for all. After the destruction caused by Roisin, Ferya and Torix come to terms with their losses and mistakes... And prepare for a final battle that will change everything.