Masahiko Kutani and Himiko Himejima are two teenagers living in modern-day Japan. One day, Himiko discovers a strange amulet. An immense power is unleashed from it, engulfing Kutani and teleporting him into another world. The young man finds himself in the ancient kingdom of Yamatai, where Himiko's "alter ego" is a divine queen. The queen election is just being held in Yamatai; but the evil general of the Kune empire sends his forces to conquer Yamatai and disrupt the ritual. Kutani has no choice but to offer his services to the kingdom, hoping to find a way to return to our world...