A young high school boy, Sonshin, who hates his city's history as a place of never-ending war, is troubled by a certain dream. When he wakes up from the dream, strange things begin to happen and he suddenly finds himself facing Gien, one of the generals from the ancient time, who's trying to kill him! Just before Gien's blade strikes home, a mysterious beautiful woman appears in front of Sonshin. What trials await Sonshin?