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.

Overcoming bullies and his own loser mentality, 10-year-old Bernie Dingledorf must destroy Dr. Chuckles’s diabolical Laugh Generator before it sends the world into uncontrollable fits of laughter.

Running away from his actions, a desperate man confronts who he has become.