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!

Beneath a well in Mount Iwami lies a dormant monster called Neronga, which was defeated by the samurai Ichiemon Murai in the Edo Period. Recently reawakened by the construction of a new power plant in Mount Iwami, only its roars are heard, and a wake of destruction is left all over the power plant. The Science Patrol suspects that Neronga is invisible, but when the monster attacks again, they find that it becomes visible when it absorbs electricity! The Science Patrol and the Self-Defense Forces' Mobile Super-Ray Corps prepare to guard another power plant, which is Neronga's next target. Can they succeed before disaster strikes? Will Ultraman arrive to fight the invisible menace?

A group of scientists and reporters have went on an expedition to Oilis Island, and find a rare Miloganda plant, but were almost attacked by a huge green plantlike monster (known as Greenmons), which they shoot to death. But one month after their return to Japan (with the Miloganda plant at a greenhouse lab), the very same Greenmons murders all of the expedition members, except one: Photographer Setsuko Hamaguchi, who the Science Patrol suspect will be the monster's next target and place her under protective custody. They also find that radioactive energy (even their Superguns and Arashi's Spider Shot gun) can make the monster stronger . . . and grow! What is the connection between the Miloganda plant and Greenmons? Will Ultraman stop the green terror from causing any more destruction?

When a manned spacecraft bound for Venus is hijacked by aliens, the Science Patrol outfits the Jet VTOL for interstellar travel. When it becomes clear that the incident is a springboard for Baltan's alien race to invade the Earth, Ultraman goes on the defense.

A pair of unusual meteors discovered by an American explorer fuse together after being exposed to a special beam. They mutate into a bizarre fourth-dimensional monster capable of warping reality as we know it. Can Ultraman overcome this psychedelic menace in time to save the day?

The opening of the Science Patrol's new undersea science base is marred by tragedy, as a mutant Narwhal damages the base and air is now on short supply. Hayata and the others must make a daring rescue to save the people trapped on the base while avoiding the monster's deadly attacks.

When a comet comes dangerously close to the Earth, the heat may have caused an unexploded nuclear warhead to detonate. When they come up empty in the search they assume a monster has swallowed it. They end up facing off against 3 monsters, but it's the new Red King that has the bomb stuck in his throat and stopping this mega Royal Rumble may not be so easy.