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The episode starts with Nobita and Gian being almost late for school and running into each other. An angry Gian then knocks Nobita down, causing him to be late. Doraemon tries to aid Nobita with a Wrestling Killer tool. At first, Nobita mistakes it for a gun, but later understand how it works and uses it to knock Gian down. Later Suneo tricks him and he sets the tool to knock Suneo down, but accidentally caused it to turn against him. He then wastes ¥100 trying to stop the tool. The episode ends with Nobita falling down the stairs.