The Investigator Set

Nobita tries to escape when he sees a bad Gian in a vacant lot, but he finds it and is in a hurry. According to Gian, someone broke an important microphone while he was going to the bathroom. Nobita complains that he is not himself, but if he doesn't find the criminal right away, he'll make it a mess! I was told.

Nobita tries to cry at Doraemon, but Doraemon, who was looking for the dorayaki that should have been in the room, turns his eyes to suspicion.

Nobita replies that he doesn't know, but Doraemon takes out the "Investigation (Sosa) Pretend Set" that future children will use for criminal pretend, and uses the "Fingerprint (Shimon) Suitskin Powder" in the set. To examine the fingerprint on the plate. Then, it reacts to Nobita's fingerprint brilliantly! Nobita confesses that he ate ...

Nobita wants to use this to find the culprit who broke Gian's microphone. As soon as I started listening in the vacant lot, Suneo was suspected of being the criminal. Immediately he asks Suneo's house, but Suneo runs away ...! ??