Conan and the Detective Boys have a new homework assignment: interview a local shop keep about their line of work and plans for the future, and then give a presentation to the class. Of course, the gang chooses none other than Detective Mouri; and after a series of off topic questions and answers, they decide to shadow Mouri and see what his job is all about. Of course, things don't go exactly according to plans - and now, Conan and friends must help Mouri solve a mystery involving a strange kidnapping!