The prince of the kingdom of Penrith freed her from captivity, and Haven Ashwood vowed to protect him. During the day she is the royal bodyguard, and at night she secretly fights monsters outside the castle walls. But when the Shadow Lord kidnaps Prince Bell, Haven must team up with the arrogant Acheron Halfbane to save his friend. Their journey takes them into the domain of a cruel queen. Finding herself in a world of powerful magic and legendary creatures, Haven realizes that she was caught off guard not only by her feelings for Acheron, but also by the conflicting forces raging within. Her rare and forbidden magic may be their only hope... but mixing light and dark comes at a price. And the price is Haven's soul. Faced with forbidden love, betrayal, and a queen who plans to destroy the kingdom, Haven is sure of only one thing. She must break the curse, otherwise it will destroy everything she loves.