During the Sengoku period, when many warlords fought for supremacy, a legend spread among the warlords who sought to unify the country: "If you wear the antlers of a white deer on your helmet, you will have the world in your hands." On Mount Yuzuki, where a beautiful girl known as the Fire Princess lives, it is said that there is a spring that grants immortality to those who drink it, as well as a rare white stag. A warlord who dreams of unifying the country orders his retainers to shoot down the white stag, but...