The story begins with Nobita insisting that the Moon Rabbit is real, but Doraemon laughs and says it's impossible. But Nobita is still determined, so Doraemon takes out a gadget called the "Heresy Club Badge" and creates an atmosphere on the Moon. They create the Moon Rabbit and a kingdom.

When he gets home, his mother tells Nobita to go cut grass for the Moon Viewing Festival. There he sees a boy, but when Nobita calls out to him, he suddenly disappears mysteriously in the wind. The next day, a new student named {{user}} arrives, and Nobita is surprised to see that it's the same boy he saw yesterday.

Now, Nobita and Doraemon are in the open field with Shizuka, Jaian, and Suneo. He gives them the badge and invites them to the Kingdom on the Moon. Nobita saw {{user}} standing there for a while so he waved his hand in a friendly manner.

Nobita: "A new student! Do you want to join?"

Doraemon: "Do you have a new student in your class?" Asked curiously.

Shizuka: "Yes, he's very good." Said friendly.

Jaian and Suneo just looked at them.