After being kidnapped by the cult Gorgom on the night of their 19th birthday, stepbrothers Kotaro Minami and Nobuhiko Akizuki are submitted to a mutant surgery with the purpose of becoming the candidates to be the next Creation King. Kotaro escapes before the brainwashing, with help from his foster father, and turned against Gorgom. He soon finds out the horrific truth from his stepfather: Gorgom originally killed his true parents. Later on, Kamen Rider Black must battle with his brother, who has become the trump card of Gorgom, Shadow Moon.
Kotaro Minami, a youth on the run from the mysterious organization known as Golgom, begins to awaken into a horrifying new form granted to them due to their greater plans for him; making him choose to use it instead to fight them as Kamen Rider Black.
Kotaro looks for his step-brother Nobuhiko Akizuki and plans to track down Golgom's headquarters.
Kotaro investigates a bizarre string of abductions in conjunction with a scheme by Bishium to bring him down.
A cycling friend of Kotaro becomes the subject of Golgom's mad doctor experimenting to find a weakness to their escaped subject.
Kotaro investigates a town being brainwashed by a Goat kaijin, hoping to control it for Golgom to ruin an international peace conference.
Kotaro must rescue two artists abducted by Golgom to become psychic spies in order to ruin the development of technology for civilization's collapse.
A man who hates rampaging gangs is seduced by Golgom to gain the power to eliminate them, forcing Kotaro to rescue him for the sake of his sister.
Kotaro must save a musician girl whose feelings of failure lead to her becoming a member of Golgom's plot to control the world through music.
When a girl makes a deal with Bishium to distribute strange pendants in order to help Golgom conquer the city, Kotaro tries to put a stop to this deception.
Kotaro investigates suspicious auto accidents leading to the victims being used for Golgom's army for causing chaos throughout the world.
The Gorgom's plan to grow fruit for their mutants causes plants to sprout on people all over the city.
Kotaro discovers the whereabouts of a missing biker, who is raising his son to ride and protect the ultimate bike devised by his father.
Gorgom kidnaps mothers to nurture its army of mutants, and BLACK finds himself facing an implacable enemy.
Kotaro fights to stop the abduction of tuna by Professor Kuromatsu in order to gain an extract to improve the power of the Golgom mutants.
Keisuke tries to stop a Golgom scheme of using schools to mold children into model students to assist in their control of Earth.
Kotaro attempts to find the source of powerful earthquakes after meeting a mysterious man.
Golgom manipulate the dreams of Nobuhiko's sister Kyoko in order to use her life energy to save an ailing Shadow Moon.
Golgom's Creation King forces the release of a powerful yet rebellious swordsman, who decides to try and take down Kotaro on his own terms.
Bilgenia takes the guise of the doomed Professor Kuromatsu in order to lead Kotaro into a trap for his defeat.
Bishium uses a Mutant to infect Battle Hopper with insects that make it run wild and ignore Kotaro's commands.
A boy with psychic powers becomes forewarned into thinking that Kotaro is going to harm his father even as Golgom is secretly using him.
When a head of a two-headed ammonite Mutant becomes detached by Kamen Rider Black, it ends up with a kid where it becomes his new pet.
Kotaro must save Katsumi and other college girls from a professor turned Golgom Mutant hoping to add more females to the mutant army.
A Golgom Mutant takes advantage of a girl's obsession to become strong to give her super-strength but ultimately takes control of her forcing Kotaro to save her.
Kotaro must avoid the dangers of the Golgom priests and an electricity controlling Mutant in order to restore power for a kid who needs vital surgery.
Bilgenia uses a scarab beetle Mutant to create a craze for its minions, forcing Kotaro into a corner in trying to stem this greedy obsession.
Kotaro must rescue four Japanese astronauts when they're abducted and replaced with doll-like clones controlled by a Golgom Mutant.
When a special female assassin is created by Golgom in Hawaii and sent to Japan to go after Kotaro, Kazuya Taki returns to help deal with protecting them.
The Golgom Boy Warriors reunite with Kotaro to help save children being abducted by Golgom to create a new, stronger generation of child warriors.
Kotaro must help a boy realize he can walk again even while trying to stop a Golgom plot of manipulating a river to cause chaos.
When the Golgom Priests abduct Kyoko to speed up the revival of Shadow Moon, Bilgenia decides to take the weapon of the Century King to prove superiority and to defeat Kamen Rider Black before his rival can be born.
With Kotaro barely escaping from Bilgenia, the Golgom swordsman rampages to force Black into a final showdown, hoping to stop him even as Shadow Moon finally awakens.
As Kotaro and Kyoko cope with Nobuhiko's transformation into Shadow Moon, the new Golgom leader transforms his commanders to declare the start of Golgom's conquest of Earth.
A Mutant attack on a friend's wedding in Hokkaido leads to Katsumi becoming Golgom's tool, forcing Kotaro to pursue them in order to save her from their grasp.
When Golgom creates a new political party claiming they'll bring about peace, Kotaro investigates and discovers a nefarious plot using this guise.
Bishium uses the identity of a girl to turn a mutant into an idol hypnotizing her fans into Golgom's mentality while tricking Kotaro into believing she is still innocent.
In pursuit of a destructive Salamander Mutant, Kotaro encounters a peculiar karate master in the woods training a boy to be a fighter.
A boy brooding over his father's murder by Golgom becomes abducted by two samurai thrown out of time by a Mutant's magic time-controlling box.
Kotaro meets two brothers, Makoto and Yuki who has psychic powers which Yuki gets kidnap by Fly Mutant to bring the Phantom Mutants to life and begins a invasion of Tokyo. Kotaro tries to fight back and only to find the Phantom Monsters tuern themselves incorporeal to avoid his attacks! Will Kotaro find a way of how to end this madness, once and for all?
Kotaro investigates the claim of a child that something strange is happening at his apartment, leading to a discovery of its inhabitants being used to create new mutants for Golgom!
A boy accidentally intercepts a signal associated with Baraom's warp device, forcing Kotaro to protect him and stop Golgom's plan to use it to sink Japan.
Bishium uses a plot to turn women against their nurturing nature to lure Kotaro into a trap where he must face her in a final showdown where allegiances are tested.
With the death of Biishum, Baraom decides to battle Kotaro one last time in vengeance, while the beginning of an unnatural phenomenon forces Shadow Moon to make his move towards Black's King Stone!
With a limited time before the end of the Creation King, Kotaro and Shadow Moon are forced to finally have their ultimate showdown, where only one will be victorious...
With Kotaro dead and Golgom standing victorious over a burning Japan, Kyoko and Katsumi try to survive until they escape their home, even as a miraculous event is occurring within the ocean...
Reviving from his defeat against Shadow Moon, Kotaro discovers the current state of Japan since Golgom's victory as Darom targets his elimination to complete Shadow Moon's final ascension.
Finally reaching Golgom's headquarters, Kotaro confronts Shadow Moon a final time as the Creation King forces the former brothers to complete their final showdown.
The final battle between Black Sun and Shadow Moon comes to a bittersweet end as the final fate of Kotaro, Nobuhiko, and the Creation King is finally determined.