Hime was a princess from Renais Kingdom. She is going to have a wedding with Emperor Chanyeol from Zehel Kingdom who is her fiancée when they were three years old but she doesn’t remember anything about him. He too doesn’t harbour any special feelings to her but they are trapped in this arranged marriage. So she runs away from the palace the day before she married. Prince Kris who is in love with Princess Hime bears some grudge against Zehel Kingdom. Upon hearing the wedding ceremony of Chanyeol and Hime, he declares war against Zehel Kingdom ignoring the friendship he has with Chanyeol. Hime disguises as a summoner and lives at the boundaries near the Grado Empire not knowing anything about the upcoming war and joins a magic academy. What is going to happen to these three kingdoms?