This 15-year-old, happy-go-lucky heroine of the story, Airi, dreams of a warm and peaceful married life like what she sees on her favorite TV drama, "Tales of Marriage on the Plains". Her parents work abroad, and she lives with her grandparents she never sees, she would be alone if not for her two dogs, Pochirou and Koromi. Airi has a hand mirror in the shape of a seven-pointed star that has been passed down through her family since the days of her great-great-great grandmother, which can be used as a portal to the magical kingdom of Astale. In fact, Airi's great-great-great grandmother was a traitorous princess from Astale, Chrisnelle, making her a direct descendant of the royal family.