The episode that started it all! This episode shows how Ultraman came to Earth, and during his chase with the fugitive monster Bemular, a tragic accident that befell Science Patrol member Hayata forces the alien to save the Earthling's life by merging with him. Thus, unbeknownst to anyone (even his Science Patrol teammates), Hayata and Ultraman are now one and the same! The course of the episode has Hayata and his teammates coping with the terrifying Bemular.

When a rocket with six nuclear bombs was sent into outer space for development of the planet Jupiter, the rocket malfunctions and lands into the sea, with only one of the bombs exploding, causing a disaster at sea. With four of the bombs recovered, it's up to the Science Patrol to find the missing bomb. Meanwhile, Fuji is given a vacation by Capt. Muramatsu (much to Ide's jealousy), and she, Hoshino and a little girl named Michiko go to the seaside Mamiyama Hotel and have fun. Meanwhile, Hayata investigates a boat disaster caused by a moving wake in the sea, caused by the giant humanoid sea monster Ragon. This is not the gentle beast as seen in Ultra Q, this Ragon, mutated by the radiation of the aforementioned exploded bomb, is hostile and violent. Not only is it heading towards the Mamiyama Hotel, but the missing bomb is dangling from its body!!! Will Fuji and the two children be safe? Can Ultraman fight Ragon without detonating the atomic bomb?

While playing with his friends on the docks of Yokohama Bay, Hoshino witnesses a strange-looking giant monster rise from the sea, the monster Gesula! It originated from Brazil, and is in search of its favorite food, cacao beans. However, Hoshino and his friends have been kidnapped by the notorious jewel smuggler Diamond Kick and his gang, who hide out in a warehouse. To complicate matters, not only is there a huge shipment of cacao beans inside the warehouse, but one of the shipments contains the diamonds that Diamond Kick and his gang were searching for, with Gesura quickly drawing near! Will the Science Patrol, and Ultraman, save the children, catch Diamond Kick and his gang, and stop Gesura?

The Science Patrol investigates a series of plane crashes in the Middle East, where they encounter a vicious insect-monster that brings Ultraman to his knees. This time, it's up to the Science Patrol to try and turn the tables.

When a uranium-eating monster disrupts efforts to rebuild a village after a tropical storm, the Science Patrol intervenes. However, the only succeed in diverting the angry creature's path of distruction. It's up to Ultraman to prevent further casualties!

A dinosaur-like monster emerges from the depths of Lake Kitayama. The Science Patrol uncovers a mysterious connection between it and the legend of Loch Ness. When they find the creature too powerful to subdue by normal means, Ultraman steps in to take it down once and for all.

A con artist discovers a meteorite with the power to make wishes come true. He uses it to conjure up a strange creature and begins terrorizing his neighbors. After creating a giant-sized version of the creature, only Ultraman and the Science Patrol can set things right.

A strange creature with the face of a frog and the body of a whale is attacking pearl farms on the Japanese coastline. When napalm bombs and electrical nets fail to stop the rampage, Ultraman comes to the rescue!

An unusual form of space radiation turns a child's chalk sketch into a real-life giant monster that's all but impervious to the Science Patrol's attacks. As the creature mutates, only Ultraman has the power to stop it.

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?

A mysterious radioactive fog settles over Tokyo. An even more mysterious alien arrives to clean it up. But can this good samaritan really be trusted? And what is his connection to the evil doppelganger of Ultraman that's terrorizing the city?

A pair of ancient capsules unearthed at a construction site unleash a pair of monsters who are mortal enemies sealed away a long time ago by the ancestors of mankind. Can Ultraman stop them before their blood feud reduces Tokyo to rubble?

An enormous bird-monster is attacking motorists on Route 87. The Science Patrol discovers a supernatural link between the monster and a statue located nearby. Once they realize the connection, it's up to Ultraman to put a stop to this terror once and for all.

Strange things are happening around a dead volcano including reports of dead birds and a giant smoking bellowing monster. The Science Patrol is asked to investigate. Seeing no danger, Mura sends Fuji to investigate the monster sighting.

Hoshino stows away in the airplane and confirms the sighting. Both Mura and Hoshino are trapped by the monster Kemurah who starts a rampage in a nearby city.