Nobita shows his friends the puzzle he spent a week putting together, but is laughed at by Suneo and GIan. Back home, Nobita cries and asks Doraemon for a better puzzle, so Doraemon takes out the "Three-Dimensional Puzzle Hammer", which can turn anything into a 3D puzzle. Nobita uses this gadget to turn the car that blocks Shizuka from leaving, the eggs that Gian is transporting, and the wall that blocks the people who are transporting things into puzzles. Nobita shows off this gadget to Suneo, who takes the opportunity to swap it out and turns things into puzzles everywhere. As a result, Shizuka and Dekisugi have to help with puzzles everywhere. Suneo intends to use this gadget to tease Gorilla, but unexpectedly turns himself into a puzzle. Nobita, Doraemon, and Gian plan to finish Suneo and invite Shizuka and Dekisugi to help, but they have had enough of puzzles. Nobita, Doraemon, and Gian have to put Suneo's puzzle together by themselves, but they don't finish Suneo's puzzle completely.