Five people, Saneyoshi, Mishima, Luchini, Ushiyama, and Shinko are unexpectedly drafted into the Earth Defense Force. Their mission is simple: when aliens invade, they have to persuade them not to invade Earth and go back to their home planets. Soon, an alien from the planet Parol appears. When all of them are about to call it quits, Kaori comes out of the warp capsule.