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.