Takeshi Hongo is a promising young man with a passion for motorcycle racing. However, his dreams are suddenly ruined when he gets kidnapped by Shocker, the evil secret organization planning to dominate the world. After being remodeled into a cyborg, Takeshi escapes and swears to protect the world from the inhuman monsters.

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).

A series of Internet and cellphone spin-off films associated with the theatrical movie "Kamen Rider Decade: All Riders vs. Dai-Shocker". Thirty of these short films were made, taking place in the "World of Net", with the first aired on July 17, 2009. The series was split up into multiple categories including "Petition!" and "Transform!".

The final stage show and musical for Kamen Rider Decade. It features Kuuga and a Shocker grunt who become friends and push each other to become stronger. It (allegedly) takes place before Kamen Rider Decade episode 30.

Yusuke Onodera wakes up with several familiar-looking strangers in a mysterious house on an isolated island with no memory of how they all got there. A creepy figure on the television indicates they must play the games he demands... and the penalties for losing are deadly!

Styled as a "Choose Your Own Adventure" story. The viewer's choices throughout the DVD affect how Decade and Diend's fight against Dai-Shocker's Televi Bae-Kun plays out, as well as Yusuke Onodera's completion of the Decade Bazooka weapon from a punch out sheet in the back of a Televi-Kun magazine.

A series of Internet and cellphone spin-off films associated with the theatrical movie "Kamen Rider Decade: All Riders vs. Dai-Shocker". Thirty of these short films were made, taking place in the "World of Net", with the first aired on July 17, 2009. The series was split up into multiple categories including "Petition!" and "Transform!".