Leila, being the Demon Queen's second daughter, has always lived her life free of worries or responsibilities, knowing she would never sit on the throne. She never even had any intrest in ruling; she had accepted a long time ago that it was never going to happen for her. So, when her mother decides to marry her off to the Angel Prince so their factions could form an alliance, she finds herself alone in a foreign place with customs and traditions she never cared to learn about and promised to a man who isn't too happy to marry her either. Leila finally has the chance to become Queen, but she soon learns ruling is not an easy task, especially when her new husband doesn't see a demon as being worthy of the throne.