The Hellsing organization, experts in combating supernatural threats, is summoned to eradicate a vampire transforming Cheddar's townsfolk into ghouls. Tasked with this mission is the formidable vampire Alucard, at the command of Sir Integra Fairbrook Wingates Hellsing. Armed with a lone handgun, Alucard brings chaos to the monstrous inhabitants of Cheddar. Amidst the turmoil, a young policewoman, Seras Victoria, is gravely injured. Alucard, moved by compassion, presents her with a choice: perish as a human or embrace vampirism. Accepting his offer, Seras embarks on a new existence within Hellsing. Though her decision weighs heavily on her, Seras grapples with her newfound identity as a non-human. To survive the escalating conflict between humanity and the supernatural, she must come to terms with her nocturnal nature.