Princess Kaguya has set her sights on Sayaka, a descendant of the dragon priestess, in order to gain more power. Yaiba throws himself into battle to stop her but falls before Gekko, who wields the Demon King’s sword, Maouken. Yaiba and his companions then make a desperate decision to revive Onimaru, who’s still sealed in carbon, and team up with him against Kaguya. But they only have three days before Kaguya begins the ritual to drain Sayaka’s essence. The epic battle to save Earth is about to begin!