[1][4] As with the two previous series, the protagonist of Fourze made his debut in the annual summer film of the show's direct predecessor, appearing in Kamen Rider OOO Wonderful: The Shogun and the 21 Core Medals.

Amanogawa High School has become the center of strange happenings, and things only get stranger when the bad boy-styled transfer student Gentaro Kisaragi attempts to make friends in his way, reuniting with childhood friend and self-professed space travel otaku Yuki Jojima, all while gaining the ire of loner Kengo Utahoshi.

However, Gentaro interferes in their plans, in part due to Kengo's body being unable to handle the strains of battle, and uses the devices to transform into Fourze.

[7][8] Upon learning of other heroes called Kamen Riders, Gentaro creates the Kamen Rider Club whose membership includes Yuki, Kengo, the school's queen bee Miu Kazashiro, Miu's jock boyfriend Shun Daimonji, garishly styled social butterfly JK and goth girl Tomoko Nozama.

As the battle escalates, the Horoscopes set their motions to the final phase of their master plan before Kengo discovers his true existence.

[16] In the portion featuring the cast and characters of Kamen Rider Fourze, the story takes place five years after the events of the series.

Both Erina Mano and Mikie Hara return to reprise their roles while Kenta Suga guest stars as Saburo Kazeta of a school club called the Monster Alliance who can transform into Sanagiman.

Sota Fukushi, Kenta Suga, Kohki Okada, and Ayumi Kinoshita reprise their roles voicing Kamen Rider Fourze, Inazuman, Groundain, and Skydain respectively.

A Movie War film, titled Kamen Rider Heisei Generations Final: Build & Ex-Aid with Legend Rider (仮面ライダー平成ジェネレーションズ FINAL ビルド&エグゼイドwithレジェンドライダー, Kamen Raidā Heisei Jenerēshonzu Fainaru Birudo Ando Eguzeido Wizu Rejendo Raidā) was released on December 9, 2017.

A manga adaptation of Kamen Rider Fourze, written and illustrated by MegaMan NT Warrior artist Ryo Takamisaki, was first published in the February issue of CoroCoro Comic Special.

The story follows Shin-chan teaming up with Kamen Rider Fourze in order to go to space and rescue Shin's younger sister who had been taken to Planet Himawari to become its princess.

[17][18][19] The Hyper Battle DVD for Fourze is titled Kamen Rider Fourze Hyper Battle DVD: Rocket Drill States of Friendship (仮面ライダーフォーゼ 超バトルDVD 友情のロケットドリルステイツ, Kamen Raidā Fōze Haipā Batoru Dī Bui Dī Yūjō no Roketto Doriru Suteitsu).

The Kamen Rider Fourze: Music States Collection' album, containing all vocal tracks from the series, was released on July 25, 2012.