Vash the Stampede is a happy-go-lucky gunman who shuns violence, but surprisingly has a whopping $6 million prize on his head. This leaves rookie journalist Meryl Stryfe and her skeptical senior partner dumbfounded as they uncover the story of this watchful pacifist. During their investigation, they stumble upon an unexpected revelation: Vash has a nefarious twin sibling named Millions Knives.