Tokiwa Sougo seems like an ordinary high school student, but he has huge dreams of becoming a king, but when a pair of mysterious time travelers reveal that he will become the ruler of time, the evil Oma Zi-O, Sougo vows to become the greatest and most beloved king of all time! In a world where Kamen Riders have fought throughout the Heisei era, their great powers are now passed on to the next generations. Rejoice and celebrate the birth of a new king!

Geiz attacks Sougo, vowing to stop Oma Zi-O before his reign can begin, but Tsukuyomi defends Sougo, who escapes in the confusion. Appearing once again, the mysterious man with the book introduces himself as Woz, while Another Build revives and attacks! What could be the key to stopping this creepy monster?

With Geiz and Tsukuyomi having moved in with Sougo, the three of them walk to school so that the time travelers can keep an eye on Sougo. While trying to escape them for some peace, Sougo discovers an unbeatable video game that gives rise to a new Another Rider! The search for someone to help salve the mystery of the game leads them to Seito University Hospital…

Despite having just transformed into Ex-Aid, Emu’s memories of being a Rider have already started to vanish thanks to the existence of Another Ex-Aid. But despite this, his desire to help his patients remains strong, as he insists that Sougo and Geiz allow him to do things his way…

Investigating a case involving the disappearances of young girls, Sougo, Geiz, and Tsukuyomi find themselves at Amanogawa High School, home of the Kamen Rider Club. But when a new Another Rider appears, one specific girl becomes the center of a mystery that drags in a pair of Riders from the past…

Takumi joins Sougo in protecting Karin from Another Fourze; Tsukuyomi and Geiz learn that Karin is actually much older than she looks.

When Sougo and the others hear of a popular magic show, they set out to check it out, but the magic they see doesn’t seem like mere sleight of hand. But as Geiz recalls a Kamen Rider who harnessed the power of magic, he confronts the magician, who quickly reveals his true form!

With Tsukuyomi in a coma due to Another Wizard’s sleep spell, Geiz angrily tells Sougo off and heads out to find a way to save her by tracking down the man with the Ride Watches he saw. In a park, he comes across a man camping, realizing it’s the man he’s after, but as Sougo battles Another Wizard, Geiz faces off with a Legend Rider!

The megacorporation Dan Foundation declares independence from Japan as the head, Dan Kuroto, declares himself king of this tiny new nation! Sougo and the others go to investigate this new king, but they discover that the once-Kamen Rider Genm is now Another OOO! How did this happen?

Hina and Eiji were both suddenly captured by Dan Kuroking! While working together with Hina, Eiji tries to escape, but Sougo stops them! Why is Sougo doing all this? And what is the future that Eiji told him about? Geiz, on the other hand, is now more confident than ever before that Sougo is on the path to become the future’s overlord…

Sougo and Tsukuyomi search for Geiz when Sougo notices the news that Team Baron dancers have been disappearing, but Tsukuyomi gets fed up with Sougo constantly returning just after leaving and having an inconsistent memory.

Sougo is revealed to have traveled back in time to save Geiz, and so there are two of him in the present, but Woz isn't very keen on this plan.

An Another Rider suddenly appears in the city, striking people down and taking their souls away! Tenkuji Takeru and Narita of the Supernatural Phenomenon Lab set out to capture this Another Rider, but there seems to be a different Kamen Rider in the mix!

With Sougo's soul separated from his body, he guides Takuru back to the year 2015 where Geiz has his Ghost watch taken from him in exchange for a Decade one.

Why does Sougo want to become a king in the first place? Sougo starts to tell Tsukuyomi about the continuous dreams he’s been having but just then, a giant mecha suddenly appears in the sky! The demonic king’s servant from the future, Kasshin suddenly appears! And thanks to Decade’s intervention during their fight, Sougo gets blown 50 years into the future…!

After hearing the words from the overlord himself, Sougo was faced with an excruciating decision: throw away his belt and prevent the horrible future he creates as Oma Zi-O or keep it and continue down a path to destruction. After witnessing the crisis that Geiz is facing, Sougo makes his decision. What will Sougo choose to do?!

While Sougo has chosen to remain fighting as Zi-O, this comes at a cost as the flow of time has suddenly been changed! Suddenly appearing before Sougo and the others appears Another Shinobi, who was created from the abilities of Kamen Rider Shinobi, a Rider from 2022 who shouldn’t even exist in this timeline’s history! On top of that, another mysterious Woz appears before Sougo and the others, and his motives are very different from the Woz they’ve known until now…

Sougo and crew are confused over the appearance of "White Woz"; Geiz and Tsukuyomi try time traveling to get the Kamen Rider Shinobi watch but are forbidden to land.

Sougo and Geiz head into battle with an Another Rider when the original Rider also arrives on the scene. How are both Kamen Rider Quiz and Another Quiz active at once?

In order to make Geiz the savior of the future, and deprive Kamen Rider Quiz of his powers, White Woz starts a fight between Zi-O and Geiz while Quiz faces his own father, Another Quiz in battle! And still, this raises yet another problem…

An incident arises when a new Another Rider starts terrorizing the city! Despite Sougo and Geiz working to fight against this creature, whatever attacks they launch against it are reflected back with twice the power, as the Another Rider escapes! Sougo, who discovers that these incidents are related to defunct website Ore Journal, makes his way towards a fishing pond. While there, Sougo finds a man named who suddenly drops the name “Kido Shinji”…

Sougo battles with his self on the other side of the mirror; Geiz tries defeating Another Ryuga when things go horribly wrong.

Sougo is at risk of being unable to graduate unless he passes his final exam, but when he starts to focus and study hard, he dozes off and starts to dream. In his dream, he sees a future where humans and machines confront each other, as well as Kamen Rider Kikai! But suddenly, an Another Rider based on Kikai appears in the waking world!

In order to access the powers of Kamen Rider Kikai, Swarz uses Heure as a catalyst, forcing him to become Another Kikai! White Woz attempts to strip them of that power so he can bring forth Geiz Revive while Rento is busy rampaging around the year 2121! Sougo decides to work together with the local children to find a way to stop him, but…

Another Riders that should have been defeated start to appear again one after another! Furthermore, they’re going after the people the Time Jackers contracted them with! Does this mean that whoever is behind this is harnessing the powers of various Another Riders? Sougo, who sets out to investigate this situation, encounters Another Zi-O, the overseer of the Another Rider’s powers! Also, the young man who transforms himself into Another Zi-O seems to be vaguely familiar…

Just who is this Another Zi-O and Kakogawa Hiryuu?! Sougo struggles with who he is as Hiryuu stands before him with a clearly hostile intent! Meanwhile, Tsukuyomi travels back in time to the year 2009 in order to discover the connection between them! And finally, the time comes for Geiz to awaken the power to defeat Zi-O!

After getting beat by Geiz, Black Woz goes to Ora and Heure for help; Schwartz recalls the first time he met Tsukuyomi.

Having stolen the Kamen Rider Woz powers from White Woz, Black Woz battles Geiz but is defeated swiftly thanks to the power of Geiz Revive. However, the powers take a massive toll on Geiz, just as Black Woz planned! As Heure gives Kiryuu a number of Another Ridewatches, he intercepts Sougo on his way to the showdown with Geiz. Meanwhile, Tsukuyomi continues to watch Sougo’s past as Tsukasa determines if he’ll destroy Zi-O’s world or not…

The decisive battle between Sougo and Geiz has reached the conclusion that Sougo had imagined as he welcomes back Geiz and Tsukuyomi to 9 To 5 alongside Black Woz! As they celebrate with a nice breakfast, Daiki Kaito, Kamen Rider Diend, arrives and steals the Ridewatches just as Another Blade appears! Without their powers, Sougo and Geiz lean on Woz to recover their Watches and seek out the mystery of Another Blade. Meanwhile, White Woz, who has lost his powers, has gone dark, and has now allied himself with Swartz to bring his future into reality!

White Woz has Blade and Chalice fight to bring on the end of the world; Black Woz and Geiz settle their differences.

Sougo and crew watch a news report of the G3 unit getting attacked by Another Agito. When they arrive during another attack, Sougo learns that Another Agito is able to multiply and one freezes in front of Tsukuyomi.

After planning to meet up with Kamen Rider Agito himself, Sougo and the others finally come face to face with Tsugami Shouichi! But in the midst of battle, the Time Jackers appear and Heure steals the power of Kamen Rider Agito to create an Agito Ride Watch! Sougo begins to struggle against the threat of Another Agito embued with the actual powers of Agito. As Tsukuyomi struggles with her newfound power, the now-powerless Shouichi brings her a meal and tells her his own story…

It's Sougo's birthday and Woz wants to make it special; Sougo's former classmate who wanted to become an oni is turned into Another Hibiki.

Kyousuke has been outed as not being Hibiki; Sougo has Todoroki take Woz as his pupil for the day.

After being given the power of Another Kiva, a woman escapes prison and exacts her revenge on the lawyers from her murder case, insisting she was wrongly convicted. With her newfound power, she intends to rule as a queen. Meanwhile, Sougo is reminded of his first love, a kind woman who helped him as a child. But what is the connection between the two? And just what is the strange disaster from the future that Jiro witnessed and will it come to pass?

The mysterious Kamen Rider Ginga has descended to Earth and no one can stand against his immense power! The Time Jackers and Kamen Riders form an uneasy alliance, but if they’re going to beat Ginga, they’ll need Yuko’s help! But can she be persuaded? And what does Geiz manage to learn when he travels back to observe the murder Yuko insists he is innocent of?

Meteorites descend to Earth carrying a new invasion of the Worms, the extraterrestrial race stopped 12 years ago by Kabuto and his allies! In the midst of the crisis, Sougo finds Kamen Rider Gatack, but Another Rider using the power of Kabuto has also appeared…

The Hell Brothers steal the Fourze and Ginga watches so that Sougo and Woz cannot stop the asteroid; Tsukasa takes Tsukuyomi to visit her childhood home.

With only two Watches left to collect, Sougo is on the verge of attaining the ultimate power, but when he is visited by the DenLiner’s Imagin quartet, he finds himself facing off with Sakurai Yuuto, who has witnessed Oma Zi-O’s future and intends to protect time itself!

Temporarily obtaining the Den-O Watch, Sougo holds the power of Grand Zi-O in his hand for only a moment before Yuuto interferes to protect the future from the tyranny of Oma Zi-O. Needing to stop Another Den-O’s rampage and the Mole Imagin, but without the DenLiner to travel back in time, Momotaros enlists the help of Geiz to travel back to 2017…

After being defeated by Oma Zi-O, Sougo arrives back in 2019 where all his friends have turned against him and his only ally is a passing through Kamen Rider.

Kakogawa Hiryuu rules over the world as Geiz attacks Sougo, bent on destroying Zi-O, without realizing that Another Zi-O II is his real enemy! Knowing the promise his friend made once before, Sougo cancels his transformation in the hopes of jogging Geiz’s memory. Meanwhile, Kaito Daiki returns in search of a new treasure from the twisted world, bringing him into the service of Swartz…

Captured by Swartz, Tsukuyomi learns of her forgotten history, including a shocking connection to the Time Jacker himself! While she wrestles with the truth, Geiz and Sougo search for her, but instead run into Ora and Heure, who have been betrayed by Swartz!

Kamen Rider Aqua arrives in a prototype Time Mazine to take Geiz and Tsukuyomi back to the future; Heure and Ora seek shelter with Sougo after being attacked by Another Drive.

With Swartz having obtained Decade’s power and become Another Decade, he begins manipulating space-time to create alternate worlds and summon forth Dark Riders that had been defeated in the normal timeline, and he starts with Eternal! Meanwhile, Ora is revealed to have been Another Drive… or was she?

With Geiz trapped in the Another World, White Woz returns, having been revived like the other Dark Riders. However, he has a plan to rescue Geiz, who he still swears allegiance to. In order to enact the plan, Aqua and Zi-O must challenge Eternal and exploit his powers for their own benefit. Miharu steels himself, summoning the last bits of courage within him as he faces the reaper himself, Daido Katsumi…

The Rider Worlds have begun to merge, causing untold chaos as enemies from throughout the Heisei era run rampant! At the same time, the Ride Watches begin to turn to stone! Could the two events be connected? With Tsukasa’s help, Sougo and Tsukuyomi travel to Tsukuyomi’s own past to learn of Swartz’s true goal, while Woz and Geiz face-off with the Roadmude reaper himself, Machine Chaser!

The end of the world is underway as Tsukasa vows to destroy it himself, pulling the Riders to safety so that they can regroup. With the loss of the Riders, the various worlds have merged, giving Swartz the means to eliminate them all and save his own world. Despite his vow, Tsukasa refuses to abandon the people of Zi-O’s world and the four Riders come up with a plan, starting with Sougo facing Oma Zi-O once more in 2068 and planting the seeds for Phase 2…

Tsukuyomi has transformed into a Kamen Rider and the final battle has begun.