Once upon a time there were two scientists, Dr. Little Emon (リトルイーモン) and Dr. Ivan Walnuts (イワンワルナッチ) (renamed to "Ermin" and "Warner" in an English fan translation), who worked together to create the world's most spectacular robots. One day, Dr. Walnuts disappeared with the laboratory's seven military robots before appearing on TV to declare his intention to conquer the world. Sukapon (スカポン, Skah-pon), an owarai robot who had been training in the Kansai region, is called back to the laboratory by Dr. Emon, who remodels Sukapon into a military robot in a last-ditch effort to stop his evil counterpart. Sukapon's first task was to defeat the seven other robots and allow Dr. Emon to reprogram back to their original selves. All eight robots then proceed to take on Dr. Walnuts's many robots, each wave stronger than the last. After fighting each of their doppelgängers at Dr. Walnuts's castle, they finally face off against the most powerful robot, Hō'ō (ホウオウ, Hoh-oh), on the surface of the Moon. After Hō'ō is destroyed, Dr. Walnuts attempts to flee in his ship, but his ship malfunctions and explodes. Fortunately, Dr. Emon rescues Dr. Walnuts from the Moon's surface. Dr. Walnuts later wakes up, back to his normal self, and Dr. Emon convinces him that everything that happened was just a dream. Sukapon is remodeled back into an owarai robot, and all is returned to normal.