Many engineers from around the world gather at the Interpol marine facility "Pacific Buoy" on Hachijo-jima, in the sea south of central Tokyo Prefecture coast, to witness the launch of a new system that connects all law enforcement camera systems around the world and enables facial recognition worldwide. Conan, along with his friends Kogoro, Ran, Agasa, Haibara, and the Detective Boys, also heads to the island with an invitation from Sonoko to see the whales. He receives a message from Subaru, who says that a Europol agent has been murdered in Germany by Gin. Perturbed, Conan sneaks onto the police ship led by Kuroda, which is bringing them to the island to protect the completion work, and tours the new facility, just in time for the Black Organization to kidnap a female engineer, seeking a piece of important data in her USB drive. A terrifying howl of screws is heard from the ocean as an unknown person approaches Haibara.
Shibuya, Tokyo, is bustling with the Halloween season. A wedding is being held at Shibuya Hikarie, where Detective Miwako Sato of the Metropolitan Police Department is dressed in a wedding dress. While Conan and the other invited guests are watching, an assailant suddenly bursts in, and Detective Wataru Takagi, who was trying to protect Sato, is injured. Takagi survived and the situation was settled, but in Sato's eyes, the image of the grim reaper that she had seen when Detective Matsuda, the man she had been in love with, had been killed in a series of bombings three years ago, overlapped with Takagi's.
At the opening ceremony of the WSG (World Sports Games) Tokyo Games, a sports festival held once every four years, it is announced that the world's first vacuum superconducting maglev with a maximum speed of 1,000 kilometers per hour will open. While attracting attention from around the world, top executives of large companies are kidnapped from the party venue where WSG tournament sponsors gather. Conan moves toward a solution and eventually finds a connection with the WSG abduction case that occurred 15 years ago in Boston, USA.
The son of a samurai who lost his parents during the attack of English ships on a Japanese town is given the name Ryo and becomes the bodyguard of Ryoma Sakamoto, a man who has his own plan to fight for the country.
