Shortly after Shinnosuke Tomari (Ryoma Takeuchi), Kamen Rider Drive, eradicates the Earth of the 108 Roidmudes, he is put on a special assignment to investigate paranormal activity elsewhere in the city. He heads to the temple Daitenkū-ji to speak with witnesses Akari Tsukimura (Hikaru Ohsawa) and Onari (Takayuki Yanagi), but as he is interrogating them, a Gamma appears and steals an Eyecon from the temple, prompting Takeru Tenkūji (Shun Nishime), Kamen Rider Ghost, to fight it, even though to Shinnosuke it seems that Kamen Rider Ghost is fighting no one at all as he cannot see the Gamma

The first part is the Kamen Rider Fourze’s place five years after the events of the series. Gentaro is now a teacher at Amanogawa High as well as the Space Kamen Rider Club’s new academic advisor. However, a new school club called the Monster League, comprised by a group of psychic children led by Saburo Kazeta, which is supported by a mysterious man named Kageto Banba. The second part is Kamen Rider Wizard’s portion, where Haruto enters the Underworld of an unknown Gate to investigate the mysterious occurrings of monster appearances. He then runs into a young woman named Yu Kamimura who can become Belle Mask Poitrine and can use magic like him. The third and final part of the film is Movie War Ultimatum. The three Akumaizer from the Underworld to plan to invade the land of the living. Kamen Riders Wizard and Fourze must fight to stop the Akumaizer and their Monster Army.

A continuation from the Kamen Rider Ghost TV series, this is the story of Makoto, Alain, and Kanon who have traveled back to the Ganma World. It will explain the connection between Makoto and the Makoto doppelganger. Kanon’s secret will be revealed as well.

The Kamen Rider Club discovers that the Dai-Zangyack fleet is moving towards Earth, led by Captain Marvelous as their Great Emperor. With many revived Super Sentai villains under his command, Captain Marvelous plans to obtain the Great Power of the Kamen Riders which is said to be "Ultimate Treasure in the Universe". Meanwhile, Tsukasa Kadoya becomes the Great Leader of Dai-Shocker once again and recruits past enemies of the Kamen Riders to take down the Super Sentai teams.

Movie War Mega Max featured the first seven Kamen Riders (Kamen Rider 1, 2, V3, Riderman, X, Amazon, and Stronger) to commemorate the franchise's 40th anniversary. Trailers for the film shown during airings of Fourze also showed the return of Kamen Rider Double as well as a new form for Kamen Rider OOO. Unlike previous Movie War films, where they were divided into 3 segments, Movie War Mega Max is divided into 5 parts. Like previous Movie War films the secondary Kamen Rider of Kamen Rider Fourze, Kamen Rider Meteor, made his debut in the film.

Confronting a mysterious enemy, the Pteranodon Yummy, Kamen Rider W receives aid from Ryu, who has infuriated Akiko by being too busy to attend her wedding! Akiko demands to know why he even became a Kamen Rider in the first place and the Pteranodon Yummy as it uses the Memory Memory on her to give her the answer to her question. Meanwhile, at the Kougami Foundation, Kousei Kougami talks of the most avaricious man in Japan, Oda Nobunaga, whose final resting place was found. With Doctor Maki overseeing the process, Kougami commissions the creation of a Cell Medal homunculus based on Nobunaga himself. Later, Kamen Rider Core begins to destroy the area as Kamen Riders OOO and W team up to fight the enemy. However, Kamen Rider Core proves too powerful and the two go underground to destroy the Gaia Memory’s source of power to even the odds.

Serving as the true ending to Kamen Rider Decade and revealing the origins of Kamen Rider W, this movie is split into three parts. In "Kamen Rider Decade: Final Chapter", Tsukasa Kadoya fully embraces his title as the Destroyer of Worlds. In "Kamen Rider W: Begins Night", Shotaro and Philip recount the night on when it all began. Elements of both parts converge in the movie's final part, "Movie War 2010" as our heroes fight the forces of Super Shocker.

Doctor Keitaro Shido, an acclaimed scientist, has been kidnapped by the terrorist organization Neo-Shocker to exploit his expertise in robotics technology. Desperate to escape, he convinces Neo-Shocker's command to allow him to operate on an injured camper. Explaining that he can turn the camper, Hiroshi Tsukuba into a powerful Neo-Shocker warrior, they allow Doctor Shido to operate. However, he quickly turns the tables on them, transforming Hiroshi, not into a kaijin, but the powerful warrior Sky Rider, using his newfound abilities to combat the evil Neo-Shocker menace.

The evil organization Shocker alters history by sending their newest creation, Kamen Rider 3, to defeat Kamen Riders 1 and 2 back in 1973. In the alternate present, Shocker is more powerful than ever, and most of the Kamen Riders are now either imprisoned or brainwashed to work for them. One such brainwashed Rider is Shinnosuke Tomari who thanks to his partner Kiriko Shijima, remembers the truth and joins forces with the remaining Kamen Riders who are still at large to make a stand against Shocker and put history back on its proper course.

After witnessing a strange explosion, Shinnosuke Tomari is later visited by a young man claiming to be his son Eiji Tomari from the year 2035. Eiji warns Shinnosuke that a year from now, Mr. Belt's AI will go berserk and lead to the Roidmudes overtaking humanity. However, Shinnosuke cannot immediately deal with this new information when the evil Kamen Rider Dark Drive also comes from the future, causing enough mayhem that leads to Shinnosuke being framed for it and becoming the public's most wanted.