Tsukasa travels to his home world of the World of Decade, where he discovers the origin of his powers and his true heritage as the leader of Dai-Shocker. The film features all ten of the lead Heisei Kamen Riders, as well as all of the Shōwa period Kamen Riders, leading to a total of 25 Riders.
Masahiro Inoue
Tsukasa Kadoya / Kamen Rider Decade
Ryouta Murai
Yusuke Onodera / Kamen Rider Kuuga
Kanna Mori
Natsumi Hikari
Kimito Totani
Daiki Kaito / Kamen Rider Diend
Renji Ishibashi
Eijiro Hikari / Doctor Shinigami
Tatsuhito Okuda
Narutaki
Moe Arai
Sayo Kadoya
Ryuichi Ohura
Nobuhiko Tsukikage / Shadow Moon
