In the corporate-owned Zawame City, dance teams compete for street cred. When Team Gaim loses their turf to the rival Team Baron, Mai and former member Kouta are called by Team leader Yuuya to check out a new gadget that might help them win their turf back. Instead, they discover Yuya missing and a portal to another world...

Kouta's transformation into Armored Rider Gaim puts Team Baron on the defensive. Baron's leader Kaito Kumon decides to test his new rival's mettle in the Inves Game.

Team Gaim's win streak continues thanks to Kouta's new powers. But when Kaito becomes Armored Rider Baron, Kouta learns the playing field has been dangerously leveled.

Kouta's encounter with a white Armored Rider leaves him traumatized and Team Gaim defenseless. Mitchy puts himself on the line to save Team Gaim - and earn Mai's attention.

Mitchy becomes Armored Rider Ryugen, Team Gaim's newest protector. But when Armored Rider Baron proves too much for Ryugen, Kouta must overcome his fear and rejoin the battle.

The turf wars in Zawame City escalate when Armored Riders Gridon and Kurokage take the stage. Meanwhile, an eccentric ex-soldier takes notice of the growing conflict and decides to throw his beret into the ring.

The Armored Riders are helpless against the war-hardened Bravo. It's now up to Kouta & Mitchy to figure out how to stop Oren before the Beat Riders become history.

In her search for Yuya, Mai is trapped in the mysterious forest and finds an unlikely savior in Kaito. Now the two must work together to make it out - if the Inves don't get them first.

A flying Inves escapes through a portal and wreaks chaos across the city. Team Gaim hatches a plan to catch it, but quickly learn Yggdrasil knows far more about the Inves than they let on...

Learning that Yggdrasil is covering up the Inves infestation, Team Gaim plots a scheme to investigate the corporation's goals.

The Inves forest becomes a battleground between the Armored Riders as Kouta & Mitchy investigate Yggdrasil. What they learn teaches them this was never just a game.

Yggdrasil's eyes & ears are everywhere. Mitchy realizes the corporation has been using them as guinea pigs and asks Kouta something unthinkable: discard his Sengoku Driver.

A mysterious illness spreads across Zawame, and the Beat Riders are blamed for it. Kouta & crew try to figure out how to stop it, but the hero's world is forever changed when an even worse fate befalls a friend.

A fellow Beat Rider - now transformed into a mindless Inves - rampages across the city. Kouta knows what he has to do, but doesn't know if he can bring himself to do it. Mitsuzane learns a horrific truth that changes everything.

The battered Kouta & Kaito are captured by Yggdrasil, where they meet the developer of their Driver tech: Ryoma Sengoku. An unexpected ally comes to Kouta's aid, but can he be trusted?

After Kouta escapes Yggdrasil's clutches, he has put a stop to a Beat Rider team using Inves to commit crime. Takatora confronts Mitsuzane about his secret life and shows him what Yggdrasil is truly fighting against.

Takatora gives his newly-recruited brother Mitsuzane a heavy task: defeat Kouta and take his Driver. When Kouta learns his sister is kidnapped, he has to face the combined might of Bravo and a new Armored Rider.

Mai tries to organize a live dance event to salvage the Beat Riders' reputation. Armored Rider Bravo crashes the party, and it's up to Zack to save the day without Kaito at his side.

Kouta & Kaito try to break into Yggdrasil's labs when the suspicious DJ Sagara lends a hand. Gaim faces an old foe that defeated him before - and this time he isn't running away.

More and more Inves pour into Zawame City while Ryugen & Knuckle try to stop them. Meanwhile Kouta & Kaito both learn the horrific truth of the Helheim Forest and what it means for mankind.

Unless nothing is done, the Helheim Forest will consume Earth and mankind will go extinct. Mitsuzane pressures Kouta to keep this truth a secret. Kaito investigates a mysterious life form in the forest.

A dangerous crack appears in the city, and Kouta enters the Helheim to close it from the inside. The Armored Rider is forced to work alongside Ryoma & Yoko - before learning a truth that shatters him to his very core.

When Kouta learns the truth of Yuya's fate and loses his will to fight, Sagara bestows a power upon Kouta to defy the world itself. Kaito encounters one of the Helheim Forest's Over Lords and gets a taste of their mighty power.

Kaito pursues the Over Lords but is overwhelmed by their strength. Kouta also decides to investigate the Over Lords, but his recalcitrance begins to test Mitsuzane's loyalty.

When Jonouchi despairs at his directionless life, Oren puts his protege through a grueling training regimen. Yggdrasil confronts Sagara's subterfuge. Who - or what - is Sagara?