During a War called the Hong Kong Crusade, an Old Blood vampire, Jirou Mochizuki, aka the Silver Blade (Gintou), fought and defeated most of the Kowloon Children.
Ten years later, Jirou heads to Japan with his little brother, Kotarou, in hopes of reaching The Special Zone, a thriving secret city where vampires live. They soon realize that a plan to infiltrate The Special Zone…