When a group of archaeologists uncover the tomb of a legendary warrior, they unearth Kuuga’s belt, accidentally releasing an ancient race of monsters called the Grongi, bent on destroying humanity. Enter Yusuke Godai, a modern-day guy next door, who learns he is telepathically linked to the mysterious stone belt. With its power, he transforms into the legendary warrior known as Kuuga, humanity’s only defense against the murderous Grongi monsters.

A group of archaeologists open a tomb that awakens horrible monsters, while journeyman Yusuke Godai is compelled to access a strange belt from the tomb to fight back against them. Also, a drunkard witnesses a murder by an unidentified lifeform near a church. Meanwhile, Yusuke is bothered by the idea of fighting and is unsure if it was right until he saw the daughter of one of the slain archeologists crying, making his reason to fight "to protect the smiles of people". This is the director's cut version of the first two episodes of the Kamen Rider Kuuga TV series.

Kamen Rider Kuuga final TV special. Jokingly labelled as the "50th episode" of the series.

Doctor Keitaro Shido, an acclaimed scientist, has been kidnapped by the terrorist organization Neo-Shocker to exploit his expertise in robotics technology. Desperate to escape, he convinces Neo-Shocker's command to allow him to operate on an injured camper. Explaining that he can turn the camper, Hiroshi Tsukuba into a powerful Neo-Shocker warrior, they allow Doctor Shido to operate. However, he quickly turns the tables on them, transforming Hiroshi, not into a kaijin, but the powerful warrior Sky Rider, using his newfound abilities to combat the evil Neo-Shocker menace.

Set primarily before the events of Kamen Rider W Forever, Kamen Rider Eternal tells the story of Daido Katsumi, the formation of NEVER, the mission that led them to target Fuuto, and reveals just how Daido obtained his Lost Driver and got his first taste of the power of Kamen Rider Eternal. As a mysterious woman retells this story to Phillip and Shotaro, they realize that Daido may not have been the simple monster he first appeared to be…

One year after the battle days of Sword of Logos ended, Reika Shindai is preparing for her wedding. However, this happiness is unexpectedly abrupted when her brother Ryoga receives some disturbing details about the upcoming wedding.

A continuation from the Kamen Rider Ghost TV series, this is the story of Makoto, Alain, and Kanon who have traveled back to the Ganma World. It will explain the connection between Makoto and the Makoto doppelganger. Kanon’s secret will be revealed as well.

In the near future, the resurgence of ninjitsu in Japan sets the stage for the adventures of Rentaro Kagura, Kamen Rider Shinobi!

A mysterious person restarts the Mirror World's Rider Battle, thus making Shinji Kido and other war participants regain their memories and transforming abilities. With the appearance of Another Ryuki, Sougo Tokiwa and Geiz Myokoin investigate this event, becoming involved in the war themselves...

Kamen Rider 4 is a web series which was released as an accompanying special to the film Super Hero Taisen GP: Kamen Rider 3. It introduced a new rider, Kamen Rider 4, who is the fourth Kamen Rider cyborg created by Shocker after Kamen Riders 1, 2, and 3. The plot goes around a time loop created by the Shocker that resets whenever someone dies, but whenever the loop resets Shocker itself somehow grows stronger and stronger. Thus, it is up to the Riders to decide whether to keep on fighting a useless battle... Or end the loops for good by sacrificing one of their own.