Professor Agasa brings Conan, Ayumi, Mitsuhiko, and Genta to a snowy mountain in the winter to go skiing. On their way to the ski resort, they meet drug manufacturing company president Ishibashi Kengo and doctor Yokoyama Takeru when they discover their car stuck in the snow and help them get unstuck. Apparently they are on their way to go sport hunting. They part ways after exchanging contact information, but a suspicious car follows along after them...