The Demon Empire make 4 large oil tankers disappear in the same night. While the boys of the Gette G team are training, the four ships, transformed into spaceships, fly over the laboratory area releasing oil that is soon set on fire. But the naphtha was chemically treated in order to inhibit the absorption capacity of the Getta rays by the laboratory collector. A robot Demon attacks the base and Ryo and Hayato try to counter it, while Benkei lingers in the woods to save the endangered fauna from the flames. The monster, however, during its attack destroys the animal shelter created by Benkei and Genki; full of anger the boy returns to battle with his shuttle and forming the Throw Poseidon you can defeat the enemy.