Shortly after the Scientific Defense Guard had been assembled, ice burgs from the Antarctic region began to melt with one of them containing ancient monsters known as the Seagras

The first and only appearance of Spiral the Tornado Monster

One day in Japan a city was suddenly attacked by a monster from the Tōgō Mountain called a Wanigodon that appeared seemingly from nowhere.

Red Smogy the Cloud Monster Attacks!

Several thousand trees disappear from the forest in a single night. In an underground cave they find Toughgilas.

A people evacuate from a tsunami, a mysterious flying object appears and rains down fire.

A robot named Pig, picks up a danger signal of unclear origins. When Hikari and Mutsumi chase after him, they find Electronic Monster Combugon.

Hikari encounters monster Mikonos while investigating and unidentified flying object, but it turns out to be a trap set by Space Ninja Alien Baltan.

Investigators visit ancient ruins on Tamara Island, and spot Monster Dolfiego in an underground cavern.

A famous magician, George Satake, tries to teleport himself from the Xalome Desert to Japan.

Ogawara uses the giant Bulldozer Weapon Hectole he developed to dig into the earth in the Himalayas, and exterminate monsters.

Two tankers are caught in a storm and disappear. The Science Guard Party takes the case, and discover three monsters attacking the tankers.

At Lake Ryujin in Tohoku, an incident breaks out where people and fish are being turned into stone.

An unidentified celestial body approaches Earth, and emits radiation that makes reptiles violent.

Monster Goglan comes out of an egg that was brought into the plant research institute. Hikari chooses to fight it with his own abilities.

The Science Guard Party gets a report that an island has sunk.

Tobe, who had been observing a strange typhoon using Beatamy, discovers Prof. Nishiki's helicopter which has crashed in the desert.

A sea serpent emerges at a South Uki Island, the hometown of Yuriko.

Joneus struggles with monsters popping up in countries around the world.

Hikari is brought to Ultra Planet U40 where he is resuscitated back to life. Hikari meets Joneus' sister Amia as well as Elek, Loto and other Ultra people.

The Badel Tribe manipulates the legendary Monster Bagon from the Dark Nebula and attacks U40.

The Science Guard Party are spending their vacation in Marume's hometown. There are frequent occurrences of ships sinking.

Mysterious flying objects are attacking passenger planes and industrial complexes.

The Princess of Alpha Centuri's first planet copies Mutsumi and infiltrates the Science Guard Party.

Incidents begin to happen where men go missing whenever a yellow wind blows through the African desert.

A strange phenomenon of water spraying of the sea is happening around the world as a message from Earth itself to humanity, asking it to leave.

The Ultra Planet U40 detects the approach of the Space Demon alien Baladon. The Great Sage dispatches Elek, Loto, and five Ultra Warriors.

The Science Guard Party captures a monster in a coastal industrial area just as the newly assigned Captain Gondow arrives in front of them.

Invading Alien Jadan sends out of countless UFOs. The Space Self-Defense Unit goes out to fight them off, but the alien succeeds in invading Earth.

The bones of the giant creature are excavated from ruins in Okutama, Tokyo. However, the bones turn into Monster Skeledon, who destroys the museum.

Joneus' sister Amia heads toward Earth to meet Hikari. IN order to get close to Kikari, who has no memory of U40, she borrows the body of a woman.

Alien Babilar sends Robot Monster Megasaura, to Earth as part of his invasion plan. Megasaura breaks apart when it enters Earth's atmosphere.

Underwater volcanoes explode in the Pacific Ocean, followed by changes in the Earth's crust in various locations.

Joneus users up all his energy fighting the monster sent by the Imbedians, and Hikari also gets injured.

Hikari and Mutsumi go to the investigate the cause of an abnormal cold front in the Southern Alps.

U40 is occupied bu the Heller Army. Amia escapes to Earth, but an army battleship flies to Earth as well.

Amia goes onboard the Ultria, which has emerged from beneath the ice at the South Pole.

Royger of the Heller Army sends the Terrible Space Creature Hellcat, which sucks energy from humans and mummifies them, to the Space Station EGG 3.

The boy from Planet Opernicus, Fedelcio, was taught by Royger that Earthlings are evil, and takes his pet Monster Orolaan to destroy cities on Earth.

Rotating Monster Giros appears and the Science Guard Party is dispatched, but Hikari crashes due to a tornado caused by the monster.

A moving island is Hatari's giant spacecraft, and he has come to Earth to capture Ultraman.

A mysterious unmanned spaceship recovered in outer space is determined to be a receiver for an electron transmitter developed bu the Heller Army.

Multiple rockets are shot at Earth from the Alien Sien spaceship, and a violent monster emerges.

An airplane carrying Terrestrial Defense Force Unit 201 returns from the northern base, but there is something wrong with the captain and the 51 soldiers.

Tobe and Marume create a device that emits a radio wave only Ultraman can perceive. It seems as though this will cause Hikari's secret to be exposed.

Cities around the world suffer attacks from the Heller Army. The final battle of Earth and U40 vs the Heller Army is finally upon us.

The Science Guard Party locates Titan, and begins its attack.

The Science Guard Party joins the U40 Ultra Fleet and they infiltrate Heller City but are captured.

The Great Sage had been reduced to atoms bu Heller, but in space, Joneus separated from Hikari can be seen fighting the Heller fleet.