Alucard meets a new enemy. that could be more powerful than he. An original undead, Incognito. And things take a drastic turn for the worst when Sir Integra's life is in jeopardy.

Almost commiting suicide, Integra is being operated on to save her life. While the operation is going on, we see the history of Integra's ascension to power. We learn that her uncle tried to take her father's place as head of the Hellsing organization, and in attempt to assume power, tried to kill off Integra while Walter was away (presumably on duty). Integra recalls her father's words of her going to a prison cell on the bottom floor if she ever found herself in a moment of insurmountable peril. There she finds Arucard, while at the same time found and attacked by her uncle and associates. After being shot in the shoulder, her blood awakens Arucard, who quickly takes care of her uncle's goons, and recognizes her as her father's successor. As her first encounter with Arucard concludes, she awakens from her state to find that the operation was a success... Walter has already set up her afternoon tea for her.

With the freak problems getting much worse, the Royal Knights arrange a meeting at Westminster with Integra to discuss the matter. In addition, the Queen will be meeting with them so they can conduct a ceremony with Integra. Because of the danger that the freaks may pose, the media is told that the meeting will take place at the Tower of London while in truth Integra's ritual is at the Hellsing castle. What is at the tower are Fargason and his men waiting for the freaks. However, it is they who are being waited on as Incognito and his freaks attack the tower. While waiting for the Queen, Alucard butts in and says that her queen isn't coming and heads off to fight.

All out war breaks out at the Tower of London and Integra's meeting with her majesty is cancelled. The remaining Hellsing members are at the decoy spot of the meeting, battling ghouls of the S.A.S. from Red House Vertigo. Due to the vast coverage of the "terrorist attacks" and the required secrecy of the undead, Hellsing organization is pinned by an unknwon source in the media as the terrorist organization itself. The British military is called in to stop these "terrorists." Fargason purposely gets himself killed so he looked like a terrorist, preventing the media from investigating the London Tower destruction any further, thus keeping both the vampires and Hellsing out of the public eye (for now). Seras Victoria is finally makes it to the tower only to see Fargason get shot. After paying her final respects, she grabs her Halkonnen and rushes into the tower area. While that is happening, Alucard was making his way through the tower to meet with Incognito for one big battle.

This episode opens with the fierce battle between Incognito and Lord Alucard. Eventually, as the battle ensues, Incognito manages to "destroy" Alucard with his own "bullets that store the power of the human God". Near the beginning of this battle Ceras Victoria became injured and realizes she must drink blood to heal herself, she discovers her first taste of true blood from her fallen master. Disgusted at her display of ignorance, Incognito leaves the scene to summon a demon from Hell.

Incognito manages to summon Set, a snake-like creature who is the Egyptian God of Evil and of Chaos, the Desert, and Foreign Lands, from which he plans to merge his body with and develop insurmountable levels of power.

As Integra Hellsing flees, her servant and closest friend, Walter, sacrifices himself so that Integra might live. Unfortunately for Walter, his sacrafice seems to be in vein as Integra is captured by Incognito and used to assist in the summoning of Set. As her blood is drained by the No