Nobita gets called a liar by his mom when she believes him to be hiding his recent exam. Nobita complains to Doraemon and exchanges his snacks for a snail shell that protects him from his surroundings. Shizuka shows up near the end and returns a journal that holds his exam grade. Nobita's mom apologizes, but is met with Nobita's demands... until she asks him for his grade.
Doraemon uses the environment screen and projector gadget so that Nobita studies. But instead of studying, Nobita helps a man and s him complete his homework in return. / Doraemon and Nobita create a miniature movie set and a fire dragon using a camera and the soft toy camera and latex. They a soft toy of Gian and Suneo and trouble them.
As Nobita gets late, Doraemon sticks a pinch runner on Nobita’s shoe and sends it in place of Nobita. Nobita takes advantage of the gadget and gets into trouble. / Suneo and Gian bet against Nobita in regards to the existence of aliens in a house, at the cost of 100 punches. Nobita gets terrified at the look of an alien’s statue and assumes he lost the bet.
