After Suneo bragged about having a ranch, Nobita was asked whether or not he has one, pressuring him to say yes. Doraemon won a number of lotteries for useless planets in the belt between Mars and Jupiter. When Suneo and the rest came to see the ranch, Nobita happened to read the last of the lottery number to the go-anywhere-door, leading them to a huge dreamlike area. As Nobita's toy horse pranced around because of the wind-up life gadget, Suneo and the others became interested in doing the same to their toys and let them live in the area. So they decided to make their own clockwork city.
Doraemon: Nobita and the Spiral City (ドラえもん のび太のねじ巻き都市 (シティー)冒険記, Doraemon Nobita no Nejimaki Shitī Bōkenki), also known as Doraemon and the Spiral City, is a feature-length Doraemon film which premiered in Japan on 8 March 1997, based on the 17th volume of the same name of the Doraemon Long Stories series. It was the last Doraemon film to be supervised by Hiroshi Fujimoto, due to his death. It's the 18th Doraemon film. In India, it was released on July 26, 2020.