When a friend discovers plans for a massive Crisis poison gas weapon, Kohtaro must come to his aid and protect him while preventing the plans from falling into the wrong hands.

SOS! The Circle of Friendship

Tetsuo Kurata

Makoto Sumikawa

Makoto Akatsuka

Eri Tsuruma

Rikiya Koyama

Megumi Ueno

Joe Onodera

Go Inoue

Shoko Imura

Maho Maruyama

Minoru Sawatari

Seizo Kato

Atsuko Takahata

Shozo Iizuka

Toshimichi Takahashi

Kazunori Arai

Atsuo Mori

Tetsuya Matsui

Takashi Ezure

Makoto Tsuji

Dad's And Mom's Secret

The Kaima Extraterrestrials' Great Riot!

Some time after the defeat of Gorgom, Kohtaro Minami attempts to create a new life for himself in peace. But when the Crisis Empire arrives to conquer Earth, they come prepared to deal with the hero; forcing him to awaken a new power to face this new threat.

Child of the Sun! RX

Kohtaro begins to realize the new power he has gained by becoming Kamen Rider Black RX, even as a robotic member of the Crisis Empire has him targeted for battle.

Bathed in Light! RX

In order to save the son of the Sahara Family from a wind-controlling knight, Kohtaro must travel to the Demon World where he discovers the truth about the realm of the Crisis Emperor.

RX vs. the Knight of the Wind

The Car of Light, Rideron

Shigeru and Reiko become caught by Bosgun's moth monster, where Kohtaro has an hour to save them before they mutate into his minions.

The Cave Exploration's Falling Hole

Shigeru befriends a strange extraterrestrial sent by Gedorian to impregnate and ultimately overrun Earth in their numbers.

A girl who suddenly becomes a genius becomes the target for the Crisis Empire due to a secret kept from her by her parents regarding who she really is.

Maribaron decides to use one of Gedorian's weaker monsters to assist in a plot to brainwash humanity by manipulating the purity of a cactus-loving girl.

Maribaron's Witchcraft

A monster replaces Shigeru with a perfect clone in a plot by Maribaron to replace all of Kohtaro's friends and allies in order to estrange him.

Surprised With Replicas

Gatezone employs an extremely powerful yet extremely rebellious member of his machine army to use his machine-controlling powers to defeat Kohtaro for the Crisis Empire.

The Scraps' Revolt

A Crisis monster is brought in to manipulate Reiko's dreams to use her to draw suspicion against Kohtaro and thus use her against RX.

The Assassin in Dreams

Shigeru finds a strange green stone needed by the Crisis Empire to activate their new dimension-switching device as the daughter of the scientist behind it pursues him to get it back.

The Targeted Kaima Girl

When Maribaron accidentally kills the Crisis Emperor's cloned daughter, she decides to fix her mistake by abducting the Sahara daughter Hitomi as her replacement.

The Kidnapped Hitomi-chan

Pursuing Maribaron and Hitomi in the Demon World, Kohtaro is forced to fight against the assumed traitor Deathgaron, leading to a sorrowful encounter that awakens a new power in RX.

Robo Rider Is Born

While still pursuing Hitomi, Kohtaro encounters a strange cyborg who wishes to work on his side, but is under the control of a harsh, mind-controlling warrior of the Crisis Empire.

The Miraculous Valley's Princess

With Hitomi fully transformed into Princess Garonia, Kohtaro has to figure out a way to finally resurrect her memories and save her before he, Shigeru and Joe the Haze are executed by Maribaron's pawn.

Bio Rider!

Kohtaro takes on Gedorian's Crisis monster mutating kids while giving them the delusion that they're flying squirrels.

The Mystery! Swimming in the Air of Dreams

Crisis creates a second sun over Tokyo, forcing the city to burn unless a scientist can develop a special magnetic gun that can eliminate the threat while under Kohtaro's protection.

The Artificial Sun of Terror!

The Banana Eating Ogre

The Front of Love And Friendship

Shadow Moon!

RX Became a Pig

Dad Is Dracula

The Bride of Scorpio

Bosgan's Revenge

Huge Counterattack! The Prince of Shadows

The Agent of the Majestic Emperor

A World Without Water

Tokyo Desert Without a Tomorrow

The Woman Who Saw the Kaima World

The Sky of Love And Hope

Decisive Battle on the Great Seto Bridge

Making a Plan For The Shikoku Aircraft!!

Kohtaro Wanted!!

Who's the Hero!?

Skinning With Tusks, the Beastman Ninja Troop

The Wicked Dance Troop of the White Bone Field

A Running Explosion! Mini 4WD

The Trap of the Ghostly Housing Development

The Terror of the 100 Eyed Hag

The 4 Commanders Are Banished

Defeated! RX

Fight! All Riders

The Fake Rider's Last Days

The Riders' All Out Charge

A Shining Tomorrow!

Takeshi Hongo is a promising young man with a passion for motorcycle racing. However, his dreams are suddenly ruined when he gets kidnapped by Shocker, the evil secret organization planning to dominate the world. After being remodeled into a cyborg, Takeshi escapes and swears to protect the world from the inhuman monsters.

SOS! The Circle of Friendship

Seasons37

Season 9 Episodes47

Cast18

Crew2

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Episode Summary