Archbishop Wing plans to use the poison of the inhuman Plantaingan, combined with 30,000 volts of electricity, to create miniaturized people preserved for use in creating cyborgs. The mutant kidnaps a young boy's sister and Kazami Shiro must fight in order to save her. Plantaingan attacks Rider Scouts HQ to liquidate a captured Destron Soldier and threatens Tachibana Tobei and Company. Can V3 liberate them from the tendrils of death?

Destron mutant Deadman-Bat, employing a virus called the Himalayan Devil, turns the residents of apartment complexes in all the major cities into vampire slaves. When Rider Scout Kiyoshi discovers his older brother is one of the victims, he and Shigeru are attacked by the mutant. V3 challenges Deadman-Bat, but is tossed from the air and Kiyoshi is injured. Can V3 develop a new technique in order to defeat the true form of Archbishop Wing?

Summoned from Mongolia, Marshal Armor becomes the new commandant of Destron Japan and employs Nazi transplant technology to create the invulnerable Pumadillon. Marshal Armor releases a slave named Yamashita to contact Kazami Shiro to lure him into a trap. Kazami's old friend Takagi Yusuke work together to protect Yamashita and his family, but something is very wrong � Takagi begins to praise working for Destron�

Marshal Armor's Snailbura implants its sinister eggs into the residents of an apartment complex. These incubate in the victims' bloodstream developing into larvae to enslave them. Snailbura's first experiment is ordered to kill Kazami Shiro, but dies before she can complete her mission. Her sister Misako accuses Shiro of murder and Snailbura promises to give her the power to avenge her sibling's death�

The Great Leader, overlord of Destron, arrives in Japan. When V3 and Riderman go after him, they fall into a trap. Meanwhile, Destron mutant Thorned-Starfish puts into action his plan to annihilate Tokyo. In the grip of suffocation, V3 and Riderman are saved when Tachibana Tobei comes to their aid. V3 and Riderman fight Thorned-Starfish, but when V3 turns to take on the Destron Leader, Riderman suddenly takes a stand to defend him�

Amazon faces the brunt of hatred after a battle with a Gedom monster hurts a girl caught in the crossfire.

Amazon continues to face problems in society and be scorned for Gedom's actions just as he encounters a motorcyclist who wishes to help him.

Amazon tracks down a colleague of Professor Okamura in hopes to find out more information about Gedom.