Sworn to protect England from the supernatural, Sir Integra of the Hellsing Organization fights alongside her protector, the immortal vampire Alucard. A flashback reveals the act of treachery that awakened Alucard years ago and set in motion the ultimate incarnation of the Hellsing Organization. A wave of vampire attacks culminates in a deadly ambush of the Hellsing compound and draws attention to a shadowy group. After uncovering the Millennium organization's links to Nazis and the Vatican, Integra sends a delegation to Brazil to find out more. When the Major declares war against the United Kingdom, Alucard relishes the opportunity to battle his old foe once again. With Alucard stranded at sea, the city of London is besieged by the vampire soldiers of Millennium.
List of Hellsing episodes - Wikipedia
Ten years ago, young Integra Hellsing ascends to the head of the Hellsing Organization after the death of her father Arthur. Her jealous uncle Richard Hellsing attempts to kill her, but in doing so awakens a dormant Alucard, who proceeds to kill Richard's men. It is Integra who shoots and kills her uncle, thereby becoming the last descendant of the Hellsing bloodline. Alucard declares his allegiance to Integra and becomes her loyal servant.
Enrico and the Vatican forces arrive in London and start to attack the Millenium forces and the few still living civilians. But soon Alucard arrives to to the carnage. Hell will sing.
The episodes of the Hellsing anime series premiered on Fuji Television on October 10, , and ran for thirteen episodes until its conclusion on January 16, Konaka ,  the episodes are based on the characters and settings of the Hellsing manga series by Kouta Hirano but lead through a different story. The episodes as a whole detail the works of the Hellsing Organization, a secret anti-paranormal unit under the command of Sir Integra Wingates Hellsing, and its various operatives including the vampire Alucard and his fledgling partner, ex-policewoman Seras Victoria.