A sword theft that shouldn't matter to a jewel thief, a murder that arrives before the heist, and Conan running out of time to figure out why Kid wants it before anyone else dies. The pacing doesn't let you breathe long enough to predict the next move. This is what happens when you give a 27-film franchise director who understands that Detective Conan fans don't want answers delivered slowly, they want mysteries that demand you stay three steps behind the reveal, and animation budget to prove it matters.
Conan receives word that Kid the Phantom Thief plans to steal a prized Japanese sword from the Onoe family in Hakodate, Hokkaido. Alongside Heiji Hattori, Conan races to intercept the notorious heist artist. But Kid's sudden interest in weaponry instead of jewels raises immediate suspicion. When the family's lawyer turns up dead in a warehouse district, murdered by blade, the case spirals beyond a simple theft. An arms dealer with ties to hidden treasure emerges as the prime suspect, his motives entangled with the Onoe family's dark wartime history. The grandfather's involvement in the military industrial complex decades ago planted seeds of conspiracy that are now bearing fruit. Conan must untangle the connections between a legendary thief, a murdered lawyer, and a fortune buried in the past. Every clue points toward something far larger than Kid's heist: a conspiracy rooted in history itself, where theft and murder are merely the surface of a much deeper mystery.