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)
