Advertising in Mirrors

Nobita returns home from school and sees Tamako sitting at the mirror. Nobita approaches her as Tamako's reflection on the mirror turns into that of a ghost. Both of them run upstairs towards Nobita's room to seek help from Doraemon, but they see Doraemon sitting before the Ultra Farsighted Mirror, wearing a ghost mask. Doraemon explains everything to Doraemon, and Nobita comes up with the idea of sponsoring shops. They turn from shop to shop in search of sponsorships, but they come to an abrupt end of their luck.

They spot a small, and old sweet shop behind Gian's house, and look for sponsorships there. The shopkeeper gets interested in the idea, and Doraemon and Nobita start advertising for cakes and dumplings from the shop, which appear on the windows of shops and mirrors. But the people are irritated by the sudden interruptions in their tasks and their voices, so it fails to attract customers. As a result, some of them arrive at the shop to complain about the advertisements. The trio is griefed by this, and they decide to peacefully sit and eat their cakes, enjoying them.

However, the mirror captures them peacefully eating them, along with their reactions. This tends to attract customers, and a few minutes later, a gigantic crowd comes running towards the shop to buy the sweets. The shop becomes successful and the shopkeeper thanks Nobita and Doraemon, while more orders for sweets come in.