Automatic Buying Machine

Episode starts on a very cold day where Nobita is asked by his mother to buy groceries. He sees a Hot beverage Vending Machine and uses the 100 yen coin. However, that 100 yen is suppose to be for the groceries only, so he goes back to home to find Doraemon and sneaks up from his mother.

Nobita saw the gadget called, "Automatic Buying Machine" which allows you to sell any accidental, old or current products that you bought. Doraemon uses his Dorayaki as an example and gets his 70 Yen refund. Nobita sells the hot beverage and gets a full refund of 100 yen and goes back to buy groceries.

After finishing an errand from his mother, he decides to sell one of his old manga and buy a new fresh one. However, his first attempt when selling one manga is 10 yen because Doraemon explained that his book is too dusty and the pages inside are wrinkled. Instead, he hoard some of his finished comics at his bookshelf and sells them one by one, the total result is 360 yen.

The next scene, Nobita buys a new comic book and runs back home to read with Doraemon. After some time reading, he sells the new finished book and got his 360 yen back and runs back to the comic store again and bought a new comic book. That is when Gian and Suneo interfere and tries to "borrow" his comic book, but it rips in half and throws it into the sewer. Shizuka walks in and asked Nobita to return her new book that he borrowed, but he realized that he accidentally put it in the machine and runs home quick, telling Shizuka to meet her later.

Doraemon said it's possible to buy the book 10x the original price and he tells Nobita that Shizuka's book originally cost 260 yen, so he has to pay "2,600 yen". He tries the half ripped book and the result is just 1 yen. As time is running out for Nobita, Doraemon quickly goes downstairs and start selling old magazines and newspapers. Nobita picks up an +18 magazines and quickly covers his face, but when there's no more hope, Doraemon sells it. Shockingly, the total price of the +18 magazine is "3,000 yen". Nobita buys the new book and gives it to Shizuka thanks to the shocking result.

Nobisuke is looking "something", but he can't find it anywhere, while Tamako called out Doraemon and Nobita for a snack. On character's perspective, Nobita is thinking why the +18 magazine is so expensive, but the truth reveals that the 3,000 yen is actually Nobita's dad leftover savings. Episode ends with Tamako, Doraemon and Nobita confuse about Nobisuke's worrisome.