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. Integra must flee or risk getting captured.
While the Vatican's fighters mobilize for battle, Zorin carries out her mission, attacking Hellsing Mansion together with her vampire Nazi forces.
Bernadotte and his Wild Geese barricade themselves against the Millennium forces. Meanwhile, Seras succumbs to Zorin's powerful illusions.
While a hellbent Maxwell orders his Vatican soldiers to attack the Millennium forces, Alucard returns to London on the wrecked warship, the HMS Eagle.
Alucard sees flashes of his past lives as he lays fallen at the hands of the monstrously transformed Anderson.
Aboard the zeppelin, Integra and Seras battle the last remnants of the Millennium forces while the Major eagerly waits for his endgame to come.