The Sazer-X team find a mysterious boy who claims to have amnesia, meanwhile, an ancient evil has awakened and begins consuming the people of earth. Bosquito, an extremely powerful evil being from ancient times has absorbed the power of the Justirisers and is using it to fuel its own minions. Sazer-X, the Justirisers, and the Gransazers must work together to defeat this villain and save the planet.

20 years after the events of the series, in a world where humans and Worms coexist, what is the purpose of the reactivated ZECT? New Kamen Riders appear.

Earthquakes in central Korea turn out to be the work of Yongary, a prehistoric gasoline-eating reptile that soon goes on a rampage through Seoul.

The spaceship AAB-Gamma is dispatched from FAFC headquarters in Japan to make a landing on the planet Mars and investigate reports of UFOs in the area. As they near the red planet, they encounter a mysterious UFO that coats the ship's hull with unusual spores. Taking one of the specimens back to earth, it soon develops and grows into a giant chicken-lizard-alien monster that tramples Japan.

Sailor Rion solely fights with monsters who attack humans. Monster Sisters from hell come to defeat Sailor Rion. A college woman Aki Uozumi encounters the site where Sailor Rion has her energy absorbed by Monster Sisters that returns her to human appearance Jun Shido. Jun still has to fight the Monsters Sisters and Aki gets the power to transform into Sailor Paisis to come to her aid.

Takeshi Hongo is a man of extraordinary intellect, but his promising future is about to be maliciously snuffed out by and evil secret society known as Shocker. Reinvented against his will and transformed into a powerful experimental cyborg, Hongo will forever be known as Kamen Rider The First.

Bent on the destruction of the human race, the secret underground organization Shocker secretly planned to plunge the world into chaos. But they didn’t count on the revolt of both of their experimentally “reconstructed” human beings, the Kamen Riders. Two years after their first battle with Shocker, a 3rd Rider arises to confront them, known only as “Version 3.” The arrival of the third Kamen Rider will hurl the heroes into their most terrible battle yet and the fate of the world hangs in the balance.

Spectreman, on an assignment from the Overlord, assumes the earth name 'George' and starts working the Pollution Research & Control Squad. Dr. Gori quickly creates 'Hedron' out of the earth to pollute & attack the earth cities. In a vicious battle, Spectreman defeats Hedron, the gas breathing monster. But - the evil genius Dr. Gori revives Hedron and it continues its attacks on earth. A young boy discovers Spectreman's secret identity and helps Spectreman to regain his strength and defeat Hedron once and for all!

A strange meteor lands in Japan and unleashes hundreds of insect-like "Legion" creatures bent on colonizing the Earth. When the military fails to control the situation, Gamera shows up to deal with the ever-evolving space adversary. However the battle may result in Gamera losing his bond with both Asagi and humanity.

With the Gyaos re-emerging, Gamera's ties to humanity have been severed with his bond to Asagi broken. Nagamine and Asagi investigate while an orphaned girl named Ayana discovers a new creature she names Iris. Nagamine and Asagi must reach Ayana before she takes her revenge on Gamera, who she blames for the death of her family.

A young boy in a peaceful seaside town gets more than he bargained for when he takes home a mysterious egg. When it hatches, out comes a baby turtle that grows into a new version of Gamera. But will it become powerful enough in time to defeat the rampaging monster Zedus?

Zero sits on a cliff while he watches a strange tower firing lightning bolts, and then rises to face against what it seemed to be members Ultra Brothers, Ultraman, Robot Zoffy, Ultraman Jack and Ultraman Ace. After incapacitating the ZAP SPACY's Space Pendragon, Ultraseven joined the group as they face against Zero.