Rider War: Prologue

Rider War: Prologue (ライダー大戦・序章) is the thirtieth episode of Kamen Rider Decade.

Synopsis
to be added

Plot
When Natsumi realizes that this is the world from her nightmares, she becomes wary for Tsukasa's well-being. Finding him in a tuxedo and feeling that this is the final chapter to their journey, they witness Wataru and Kazuma leading their respective Rider/monster groups against each other. After Rising Ixa and Leangle are killed off in the fight, Tsukasa makes his way to Wataru as he grieves over Ixa's death. Meeting the Fangire Queen Yuki, they learn from Wataru that the Riders are fighting each other to maintain the existence of their worlds. Returning to Hikari Studio after refusing to take sides, Natsumi reveals her dreams as Narutaki appears and reveals it to be the work of Apollo Geist and asks Tsukasa to stop Dai-Shocker. Tsukasa and Yuusuke attempt to set up peace between Wataru and Kazuma so they can stop Dai-Shocker together, but the two are too focused on protecting their worlds to listen. While this occurs, Natsumi finds the young riders of the World of Hibiki being overpowered by Saga and the Fangires until only Hibiki remains. After killing Saga with Daiki's aid, Asumu mourns over his friends as he shows Daiki that there some treasures that should never be taken. Learning that Apollo Geist is to marry Yuki, Tsukasa heads to the wedding to investigate. Coming with Garren to his aid, Blade and Decade destroy the Fangires and the Undead with Diend's help. But Guy assumes his new Super Apollo Geist form and quickens the merging of the Nine Worlds into the World of the Rider War, completely eliminating the World of Blade and causing Blade and Garren to disappear. Elsewhere, another man arrives in this A.R. World, identified by Daiki as Kazuma Kenzaki, who points out Dai-Shocker is not their true enemy.

Cast
to be added

Kamen Rides

 * Decade - Complete Form
 * Decade Complete Form - Kamen Rider Ryuki (Survive Form)
 * Diend - None

Trivia

 * As part of Super Hero Time, this episode aired alongside Samurai Sentai Shinkenger episode 26, Decisive Match Number One.