For centuries, numerous secret organizations have participated in the extermination of various dangerous monsters. One such group is Hellsing, based in England and led by its shrewd commander, Sir Integra Fairbrook Wingates Hellsing. Her most formidable hunter and trump card is Alucard, an invincible vampire who was genetically modified by her father. Although he is one of "them," he has sworn to serve as her protector and servant. A new crisis emerges, and with the assistance of Seras Victoria, his recently turned vampire partner, Alucard must uncover the truth behind mysterious vampire attacks. Not every human is destined to be his ally in this conflict, and he will not hesitate to kill anyone who obstructs him.