Kamen Rider Decade: All Riders vs. Dai-Shocker is the film adaptation of the 2009 Kamen Rider Series Kamen Rider Decade. As Decade is billed as the 10th anniversary series of the Heisei period run of the Kamen Rider Series, 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 (with three secondary Riders and three Diend-summoned Riders).
Jack Hollister, aka Skysurfer One, is an extraordinary skydiver who leads a group of vigilante crime fighters known as the Skysurfer Strike Force. Jack's mission is to seek out and defeat the robotic Cybron - a man with a computer for a brain who may have played a sinister role in the mysterious death of Jack's scientist father. The Skysurfers battle Cybron, and his bio-borgs, to stop his attempts at world domination and clear Jack's late father Adam's name, by using anti-gravity skyboards that fly on their own rocket power. This group of daredevils soars the skies at breakneck speeds and performs amazing acrobatic feats in their battle for justice. The Skysurfers use technologically advanced watches, Digitrans, that transformed them from their casual clothing to their battle attire and weapons; at the same time, their cars transform into rocket-powered surfboards that they can ride in the air.
