The Science Patrol goes back into action when an invisible UFO anchors itself over the Scientific Technical Center in Tokyo. The UFO's inhabitants are the clawed insect-like aliens from the planet Baltan! Able to divide into multiple copies, as well as possess certain human hosts, the Baltans plot to take over the Earth and enslave all humanity . . . until Ultraman comes to the rescue! Meanwhile, Science Patrol member Ide tells us why he got a black eye in the beginning of the episode!