The special opens with Tachibana Tōbei taking some children to a Kamen Rider roadshow. Just as he's reminiscing about all the heroic modified humans he's lived alongside- Ichigō, Nigō, V3, Riderman, X, Amazon, Stronger and Tackle- the first seven Riders gradually show up to greet him in their human guises, unrecognised by the crowds. When it's revealed that the kaijin onstage are 'real', not actors, the Riders transform to save the crowd and Rider actors, uniting their power to defeat the Delzer Army's true leader, Great General Darkness in his hideout beneath the stadium.
藤岡弘、
as Takeshi Hongo / Kamen Rider #1
佐々木剛
as Hayato Ichimonji / Kamen Rider #2
宮内洋
as Shiro Kazami / Kamen Rider V3
Akira Yamaguchi
as Joji Yuki / Riderman
速水亮
as Keisuke Jin / Kamen Rider X
岡崎徹
as Daisuke Yamamato / Kamen Rider Amazon
荒木しげる
as Shigeru Jō / Kamen Rider Stronger
小林昭二
as Tōbei Tachibana
堀田眞三
as Great General Darkness
中江真司
as Narrator (voice)
