Conan caught a bad cold and is taking a rest in bed. Then he receives a phone call from Haibara. Haibara reveals to him that she has completed an antidote for the APTX 4869. Conan quickly goes to Agasa's house and takes the pill and emerges as Shinichi. He notices things are strange when he could not find Haibara. Heading to school, Conan finds the Detective Boys as teenagers...