When Nobita feels like diving in his hometown, ডোরেমন uses Underwater পাম্প Simulator (架空水面シミュレーター・ポンプ?) to পাম্প all the water to fill up water. That night, ডোরেমন and Nobita use a Diving Mask Simulator to dive underwater. Later on, lots of fish, and a হাঙ্গর attack ডোরেমন and his friends. So, ডোরেমন puts a stop on the Underwater পাম্প Simulator, but there is a girl named Sophia, lay down on the bushes in his town.