After thousands of years of prosperity, the majestic imperial capital has long been rotten from the inside, and the ruler with an evil soul is leading civilization to destruction. In order to relieve the plight of the village, Tatsumi (voiced by Saito Souma), a young man with superb swordsmanship, went to the imperial capital alone. At this time, the supreme emperor of the imperial capital was just a child who was ignorant of the world, and the minister, the actual manipulator of the country, was the root of the corruption of the imperial capital. After twists and turns, Tatsumi was forcibly pulled into a mysterious organization NightRaid by Leone (voiced by Asakawa Yuu) who had deceived him before. NightRaid is an assassination group that scares all the rich and powerful in the imperial capital. They are a secret special force under the revolutionary army, and their ultimate goal is to overthrow the minister's rule. Under the leadership of Najetta (voiced by Mizuno Risa), Akahime (voiced by Amamiya Sora), Leone and other peerless masters gathered under them. The fate of Tatsumi takes a turn, and a series of greater disputes lead him to an unknown direction... This film is based on the manga by Takahiro (original work) and Tetsuya Tashiro (original painting).