Takagi has gone somewhere and Sato cannot figure out where it is. While at the police station, the Detective Boys are approached by a man with a package for Sato. Inside is a tablet with a video of Takagi unconscious and tied up!

The police see a bomb located under Takagi. They are able to determine he is somewhere in Hokkaido once it starts to snow. Conan deduces the type of building they need to look for. Can Sato get there in time before the bomb detonates?!