War threatens the continent, and the only thing standing between two small kingdoms and destruction is an arranged marriage. Kwon Ji Yong, a rare omega prince who refuses to be fragile, is sent to wed the infamous "Mad Prince" Choi Seunghyun. The court says Seunghyun is cursed. Ji Yong thinks he is lonely. But loving a king with a monster inside him might cost Ji Yong far more than a crown.