John H. Watson starts out as a medical student in Victorian London—brilliant but genuinely torn about what he wants from life. A secret British agency notices his talents and recruits him for something most people would find deeply unsettling: he knows how to reanimate dead bodies, thanks to research that somehow leaked from Dr. Frankenstein's work. Not exactly a normal skill set.
Watson doesn't really want any of this. He gets pulled into spy work almost against his will, chasing down Frankenstein's lost research notes across the globe. That's where Friday comes in—a resurrected corpse who becomes something like Watson's closest companion through all of it. The two of them end up hunting down "The One," which is essentially Frankenstein's prototype, a reanimated body that's developed its own terrifying ambition: to manufacture a genuine human soul.
The whole thing becomes less a straightforward espionage thriller and more a meditation on what actually makes someone human. Life, consciousness, identity—these questions haunt the story as much as the corpses Watson and Friday encounter. It's the kind of adventure that looks like it's about stealing documents and running from enemies, but it's really asking whether a reanimated being can ever truly be alive.
Content compiled by AnimeList.moe from publicly available sources.