Hellsing "Dusk" is a "story-within-a-story" alongside Kouta Hirano's original Hellsing story. "Dusk" centers around a paranormal investigator who is sent to England to aid the Hellsing Organization with the ghoul outbreaks and vampire attacks. The story focus not only on BW Dio's investigation but his intermingling with the mysterious Millennium Army as well as discovering his connection with one of Millennium's top operative, "The Huntress".