Conan, Haibara, Ayumi, Mitsuhiko, and Genta found an abandoned car on the riverbank. Although they complain about the insanity of the situation, rain is forecast for the evening, so the five of them decide to rush off to play. Conan and his friends begin to play soccer, but Genta almost hits a woman on a nearby bench. She is Tamaki Onda, a representative of a design company. She is fidgety and blurts out her voice into the voice recorder, but after talking to Genta, she shows them some spectacular lifting. They became good friends through soccer, which they used to play in college, but then they heard the sound of thunder as predicted. Conan and his friends leave Tamaki, who seems to be waiting for someone, and go back to their homes...