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.
Tsukasa Kadoya / Kamen Rider Decade
Yusuke Onodera / Kamen Rider Kuuga
Natsumi Hikari
Daiki Kaito / Kamen Rider Diend
Eijiro Hikari / Doctor Shinigami
Narutaki
Sayo Kadoya
Nobuhiko Tsukikage / Shadow Moon
Jôji Yûki
Kotaro Minami / Kamen Rider Black / Kamen Rider Black RX
Shouichi Tsugami / Kamen Rider Agito
Young Tsukasa Kadoya
Young Sayo Kadoya
Ambassador Hell
General Jark (voice)
Kamen Rider 1 (voice)
Kamen Rider 2 (voice)
Kamen Rider V3 (voice)
Kamen Rider X (voice), Garagaranda (voice)
Kamen Rider Amazon (voice), Ikadevil (voice)
August 8, 2009
Tsukasa Kadoya / Kamen Rider Decade
Yusuke Onodera / Kamen Rider Kuuga
Natsumi Hikari
Daiki Kaito / Kamen Rider Diend
Eijiro Hikari / Doctor Shinigami
Narutaki
Sayo Kadoya
Nobuhiko Tsukikage / Shadow Moon
Jôji Yûki
Kotaro Minami / Kamen Rider Black / Kamen Rider Black RX
Shouichi Tsugami / Kamen Rider Agito
Young Tsukasa Kadoya
Young Sayo Kadoya
Ambassador Hell
General Jark (voice)
Kamen Rider 1 (voice)
Kamen Rider 2 (voice)
Kamen Rider V3 (voice)
Kamen Rider X (voice), Garagaranda (voice)
Kamen Rider Amazon (voice), Ikadevil (voice)
