Isabelle has always dreamed of meeting her true love and living happily ever after. Unfortunately, she discovers that she was just sold to the monstrous Duke Cardiego, who's infamous for killing his bride candidates. Her only way out is to quickly marry someone else, and as it turns out, her BFF Lix is the perfect choice! Although she tells him she will just stay a friend, Lix begins to show her that he doesn't feel the same way. Will their friendship be able to last through this matrimony?