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).

Movie War 2010 is split into three parts. The Kamen Rider Decade portion of the film, written by Shoji Yonemura, is titled Kamen Rider Decade: The Last Story. It follows the series cliffhanger ending at the climax of the Rider War. The film is billed as the "True Ending" and was originally subtitled Decade vs. All Riders. The Kamen Rider W portion of the film, written by Riku Sanjo, is titled Kamen Rider W: Begins Night, taking place between episodes 14 and 15 of Kamen Rider W, investigates the origins of Kamen Rider Double as briefly shown in the cold opening of the series' first episode, referred to in the series as the "Begins Night". The film is described as the "True Beginning" and was originally subtitled Episode Zero. In the final portion of the film entitled Movie War 2010, a convergence of the two films that brings the casts and characters of Decade and W to finish the fight with Super Shocker together.

Director's cut of Kamen Rider × Kamen Rider W & Decade: Movie War 2010.

Former high school classmates, now adults, hold jealous thoughts, hidden intentions and lust for revenge. Graduates from a high school have held reunions since they graduated 10 years ago. The high school itself is located 2 hours from Tokyo by train and past reunions were held by different teams for different areas. An upcoming reunion is the first time where everyone will gather again.

Prosecutor Kohei Kuryu takes charge of a case with a foreign embassy possessing the key to solve the case. Due to the extraterritoriality involving the case, the investigation has not gone anywhere. A crisis then ensues. Kohei Kuryu and his office attempt to extract the truth behind the wall of the Neustrian Embassy.

An attack takes place on Rainbow Bridge in Odaiba, Tokyo by the fighter helicopter `Gray Ghost`. 2 days earlier, the Gray Ghost was stolen. The perpetrators are followers of Yukihito Tsuge. Yukihito Tsuge planned a coup of Tokyo 13 years earlier. The leader of Special Vehicle Section 2, Keiji Gotoda, sets out to stop the terrorists.

Struggling manga author Satoru Fujinuma is beset by his fear to express himself. However, he has a supernatural ability of being forced to prevent deaths and catastrophes by being sent back in time before the incident occurred, repeating time until the accident is prevented. One day, he gets involved in an accident that has him framed as a murderer. Desperate to save the victim, he sends himself back in time only to find himself as a grade-schooler one month before fellow classmate Kayo Hinazuki went missing. Satoru now embarks on a new quest: to save Kayo and solve the mystery behind her disappearance.

Nobuyuki Sakisaka (Yuta Tamamori) is a salaryman. When he was in middle school student, he read light novel "Fairy Game”. He still has that light novel, because he was so shocked by the ending. One day, Nobuyuki Sakisaka browses the internet and comes across the blog "Rein Tsuri no Kuni.” He learns that the blog writer, Rika Hitomi (Mariya Nishiuchi), also was shocked by the ending in light novel "Fairy Game." Nobuyuki and Rika soon begin to exchange emails. Nobuyuki wants to meet Rika, but she refuses due to her secret.

A single father and judicial clerk named Tsutomu's violent past in organized crime threatens to catch up to him when his daughter is taken hostage.

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!".

Shuji Mimura works as a broadcast writer. He learns that he doesn't have much time left to live. He decides to concentrate on the future of his beloved family. Shuji Mimura's final plan is to find the best man to marry his wife Ayako.

A couple decide to relocate from Tokyo to the northern island of Hokkaido where they settle and establish a bakery and café called Mani. One cooks. The other bakes. Everyone walks out happy.

Under the impression that they saved the World of Den-O, Tsukasa Kadoya (Kamen Rider Decade) and company begin their journey to the World of Kabuto when they are halted by Sieg who presents them a manuscript that detailed the legendary Oni Conquest with Momotaros' image on it. As this occurred, the Tarōs mysteriously vanish from the DenLiner as they are about to help Kotaro Nogami (Kamen Rider New Den‑O) out with the true threat to their world.

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 tragic accident lead to Kaori's blindness, but she clings to life and the smaller pleasures it can still afford her. She meets Rui and begins to talk to him. Rui was once a promising kickboxer, but something happened in his past. Kaori's smile brings out a change in Rui. However, the two are connected in more than one way. Rui attempts to do what is right.

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.

The Edo period. Once a famous swordsman, Kyutaro Madarame, aka “Madara the Devil,” is now a masterless samurai. When a white cat called Tamanojo appears before Kyutaro, the encounter changes him forever. Starring Kazuki Kitamura. This offbeat tale of samurai spirit and adorable animal antics returns to the screen on a breathtaking scale!

Eiichi wanted to become a top shogi player and attended a shogi player training center run by the Japan Shogi Association. At the training center, he could not beat Riku, who is extremely talented in the game, and Eiichi eventually gave up on becoming a shogi player. To live a more normal life, he enrolled in a university. Because he spent most of his time playing shogi, he has a hard time adjusting to campus life. He does not have any friends at school. One day, Eiichi comes across an AI based shogi computer program. The computer program is more creative and stronger than he expected. This piques Eiichi interest in computer programming, specifically for shogi games. He visits an AI research club and meets senior student Isono. He learns about computer programming from Isono and makes a new goal for himself. Eicchi now wants to write a top shogi computer program. A few years later, Eiichi wins a computer shogi competition. He receives a request to play against Riku.

Shinichi Tsuda, a Naoki Prize winning author, is working to publish his newest story. It revolves around Tsuyama, a driver for a call girl business in Toyama Prefecture, who comes across a mysterious counterfeit bill and has his life targeted by underworld kingpin Kurata. Is his story fact or fiction? His editor, Nahomi Torikai, decides to verify whether his latest work is mere fiction based on real-life experiences. She looks into a family that vanished, a post office worker who went missing, a shady load of cash, the whereabouts of the doves, and the fateful encounter from that night... A series of shocking facts are revealed from Tsuda’s stories. Why did the counterfeit money end up in Tsuda’s hands? What is the “ending” that Tsuda wished to portray?