The story takes place in the post-apocalyptic future and there is an oft-mentioned tyrant named the Red King ("Aka no Ou" in the story). In a desert village, a blind prophet, Nagi, predicts that a set of twins will be born (a boy and a girl) where the boy, christened The Boy of Destiny ("Unmei no Shounen"), will be the savior who leads the villagers to victory against the tyranny of the Red King. The Red King also knows of this prophecy and takes steps to prevent the boy from coming of age by sending his Red Army to the village. Incidentally, the Red King is actually only a few years older than the twins. The two twins Tatara (the boy) and Sarasa (the girl) look EXACTLY alike except one's a boy and the other's a girl. What eventually happens is that Tatara is killed by one of the Red King's generals, but Sarasa decides to take his place by cutting off her hair and donning her twin brother's clothing.<br />