Inside the Major's zeppelin, Seras and Integra slay many Nazis. They come across the Captain waiting ahead, so Seras tells Integra to confront the Major, whilst she fights the Captain. Outside, Alucard starts to gather up all the blood of the fallen in London, so he can consume it. The Major sees what Alucard is doing, and has been waiting for this moment.

Seras struggles against the Captain, and gets hit through the floor. She lands in the Nazi's room of stolen treasure, and believes she can't win. But she then hears Vernedead's voice inside her head, telling her not to give up. Realizing that he is now her familiar, the two resume fighting the Captain, and eventually defeat him. He explodes into blue flames, whilst Seras heads off to where Integra is.

Integra finds the Major and tries to kill him, but he's protected by a sheet of bullet proof glass. He explains to her that the main event is one night only: when the curtain falls, Alucard will cease to exist! Outside, Schrödinger takes out a knife and cuts his own head off. His head and body fall into the river of blood. Alucard ends up consuming him, which is what the Major had been waiting for. The Major tells Integra that by drinking Schrödinger's blood, Alucard has become the paradoxical cat. He is now shackled by infinite possibility, and as long as he is self aware, he is everywhere, and nowhere. But that conundrum is now multiplied by the millions of lives and consciousness within Alucard. Alucard is no longer capable of recognizing himself, which means he's not alive, dead or even undead. Integra can only watch as Alucard completely vanishes.

Heinkel tracks down Walter and shoots him, but he survives. Walter uses his wires to heavily injure Heinkel, but she survives, swearing she'll kill him. Back in the zeppelin, Seras finds where Integra and the Major are, and she rips out a cannon. She destroys the glass and blows apart the Major, who is revealed to be a cyborg. But he considers himself to be more human than Alucard ever was.

The Major and Integra shoot at each other. The Major finally manages to hit something, and shoots out one of Integra's eyes. But she shoots him in the head, killing him. Integra tells him that nobody will think of this as a war, this was just an exchange of bullets -the death rattle of a sad lunatic half a century past his prime. As the zeppelin starts to explode, she and Seras leave. Elsewhere, Doc attempts to gather up some of his research so he can flee and continue his experiments, only for Walter to find him.

Walter finds what the Nazis used to create vampires: the skeletal remains of Mina Harker, the only woman that Alucard fed upon, and in turn, fed upon him. He uses his wires to pull down part of the ceiling, which crushes Doc to death. Walter then starts smoking, and says this is a shame, as he'd hoped to give Alucard a proper send off. With his final words he tells his master, Integra, that they had a good run. The lab is then completely engulfed in flames.

30 years later, Integra defeats her opponent in a fencing match. Makube, Maxwell's successor as director of the Iscariot Organization, applauds her skills, but she tells him and his group -which includes Heinkel -to go and wait in the lobby. As Makube's group leaves, one of them says they could conquer this place now. But Makube strikes the wall, which causes Vernedead to yell out. Makube explains that this is Seras Victoria's "shadow", which wraps around the whole mansion, and every person inside. Heinkel says that they could die now, but they could also take out half of the Round Table with them. Makube declines, and says the losses they suffered during the 9th Crusade are still cutting them to the very marrow. He believes they can wait another 100 or 200 years, as the 10th Crusade will set everything right.

Gregory Penwood asks Integra about his grandfather, Shelby. She makes up a story about Shelby tearing through Nazis like they were paper, and then destroyed a zeppelin by sacrificing himself. She then casually asks Gregory for a new helicopter. As he runs off in tears, Integra tells Seras that when she dies, Hellsing comes to an end, both the family and the organization. It'll fall upon Penwood and his ilk to carry on the torch as part of a state-run government agency. She's also getting worried about her aging, so Seras attempts to cheer her up by offering to drink her blood, she could even go all Alucard. Integra tells her not to joke, and wants to know when Alucard is coming back -it has been 30 years! That night, Alucard does finally come back, and enters Integra's room. He's about to suck her blood, only for her to wake up and shoot him.

Alucard laughs and says that was such a violent welcome, he feels honored. He explains that killing one's self takes some time, and is his situation, there was a lot of self to kill. 3,425,867 souls were within him, clouding his mind and denying him awareness. He butchered them all until only himself remained. He has returned here, but he is also always nowhere. It's a conundrum, but the truth of it is, he is everywhere. Integra asks him if he was going to drink her blood. He explains he hasn't eaten in 30 years, so he's famished. Integra says the young women he knew is gone, she's now ancient. Alucard reminds her that he's old too. Integra smiles and then bites into her finger, causing it to bleed. As blood trickles down, she tells her dear count that he is home. He tells his countess that he's back forevermore, and prepares to drink the blood dripping from Integra's finger.

Manga Differences

-The scene where the Major wonders if it'll be Integra or Seras who will kill him, or if he will kill them both, was not in the manga.

-In the episode, the scene where Heinkel shoots Walter is one continuous scene. In the manga, after Walter is shot for the first time, it goes back to the Major looking at Integra and Seras, saying he knew they'd be the ones to kill him. Then it goes back to Heinkel shooting Walter.

Notes

-Some fans believe this episode ran out of budget, hence why most of the last few scenes look so cartoony, but the truth is they look exactly like that in the manga as well.

-The very end of the credits shows this image:

This is based on the cover art for the manga's 10th volume.