Shocker plots their "Snow Strategy" to melt all of the snow of Kusatsu Heights and cause a great flood, and makes the physicist Doctor Mikawa manufacture an energy bomb that releases intense heat.
Humans, exposed to the Dead Man Gas Birdman Gilgalass breathes out, turn into homicidal maniacs and start killing one another. Making use of this gas, Shocker plots to annihilate all humanity.
Monster Jaguarsman stands in the way of Houngu Takeshi's Grand Prix ambitions and roars of a Jaguar are suddenly heard in a peaceful zoo when operation animal panic put japan into chaos. Kamen Rider #1 makes his return.
The Sea Snake Man kidnaps Taki using the confuse power from his serpent eyes and Kamen Rider investigates his disappearance. In his search finds a mysterious village besieged by shocker and his monster.
Shocker develops a bacteria that ages biological cells. By putting the bacteria into the balls of a bowling alley, they conduct an experiment to rapidly age young people.
The Shocker monster Gireera schemes to throw capsules packed with a deadly poison powder into Japan's national reservoirs for their "Poison Water Strategy".
Takeshi's scientific friend discovered how to make liquid gunpowder that dissolves metal but Shocker plans to put his hands in this new technology of destruction. Shocker's dangerous plots to get what they want put Kamen Rider in check.
Another day another scientific research in jeopardy. This time Shocker tries to snatch X-alpha Liquid, a formula that is able to reanimate death matter. In order to protect this wonder, Kamen Rider must face all enemy of humanity progress.
Deceiving them with the slogan, "Come catch Masked Rider and beetles!" Shocker kidnaps children to Mount Takao where Shocker's insect expert Beetlelong organizes a Shocker school and turns them into his pupils.
The cyborg Longhornkid revives the monsters defeated by Rider to begin the "Devil Festival." Through sacrifices, energy is given to Zanjio, Jaguarman, Poison Lizard Man, Hedgehoras and Rhinogang to achieve their resurrection.
Shocker's plans to establish a base on the southern tip of the Kii Peninsula obstructed, they use Crabking to abduct the oceanographer Doctor Sakai who dreams of an undersea farm.
With Ambassador Hell's defeat, Shocker's Japan division is abandoned. However the Shocker Chief adds the power of Africa's secret organization Geldam and forms the new organization Gel-Shocker.
Gel-Shocker's Scorpiolizard uses the Shocker scientists as the guinea pigs for an oxygen deprivation gas and eliminates them. However one scientist, Takashi, does escape. Scorpiolizard pursues Takashi and attacks his wife's hospital.
The Boys Rider Squad come to hike Mount Oomuro. Meanwhile, Gel-Shocker's Eaglemantis executes the human hunting strategy and attacks a bus headed for Mount Oomuro, abducting the passengers.
Hongo consults with the young boy Satoru who is concerned about his older brother since he's become obsessed with painting a black cat, but at that moment, Nekoyamori appears out of the black cat paintings decorating the room.