This article is about a/an movie in Kamen Rider Build.
For the song that this movie is named after, see Be The One.

Kamen Rider Build: Be The One (劇場版 仮面ライダービルド: ビー・ザ・ワン Gekijō-ban Kamen Raidā Birudo: Bī Za Wan) is the summer movie adaptation of Kamen Rider Build, double billed with the Kaitou Sentai Lupinranger VS Keisatsu Sentai PatrangerIcon-crosswikis summer movie, Kaitou Sentai Lupinranger VS Keisatsu Sentai Patranger en FilmIcon-crosswiki.

The film will be released on Blu-ray and DVD on January 9, 2019.


Set after the events of the Japanese Civil War, the newly appointed governors of Seito, Hokuto and Touto now support each other in their mission to reunify Japan, however they are secretly members of an extraterrestrial clan known as the Blood Tribe (the same as Evolto), who each have assumed government positions in order to take over the entire world. Being certain that Sento Kiryu/Kamen Rider Build is a major threat to their plans, they proceed with their "Build Annihilation Plan" (ビルド殲滅計画 Birudo Senmetsu Keikaku) to manipulate Sento's friends and other civilians against him. With Ryuga Banjo now against him, Sento must find a way to fight and survive as he hunts for the truth to stop the Blood Tribe in succeeding with their ultimate plan.


The movie begins with a POV shot of the Pandora Box being released and the walls going up, it appears to be from Sento’s eyes and his father telling him to get somewhere safe. Quick cuts to present day with a public conference of the unification of Seito, Hokuto and Touto and the designation of a governor for each region with Pandora Tower at its center. Sento is complaining about the heat while riding his bike on the phone to Sawa and Misora. He comes across a brother and sister being attacked by two Smash. He transforms and fights before the screen cuts back to a new character, Kengo Ino, at the press conference. He says for peace to come, Kamen Riders must become extinct and the crowd chants extinction. He uses his ability to manipulate the civilians who fall silent and begin walking off different directions, entirely noiseless. Build defeats the two Smash when groups of civilians appear, charging at him, engulfing him.

He manages to sneak out of the crowd and is chased throughout town, even getting back to the Cafe and is attacked by Sawa and Misora. He releases some gas in the lab and hides in the Fullbottle purification machine until they’re knocked out.

The three governors have a meeting with Evolto and reveal themselves to be the Blood Tribe, survivors of the same race as Evolto who aim to destroy the planet and consume it. It is revealed also that they had been acting in the shadows ever since the Skywall appeared and manipulated each territory and the entire war but Evolto changed his mind and their plans were disrupted. Evolto tells them he won’t intervene in what they want to do but reminds them he has the upper hand with the power of the Pandora Box.

Ryuga is picked up in a limo after visiting his girlfriend’s gravestone. Mitsuomi, the Zebra Lost Smash, appears in the limo and Ryuga jumps out from the car and they both transform and fight. Mitsuomi reveals that he was the one who ordered Kasumi to be turned into a Smash. Ryuga loses the fight and is taken under control like the other civilians.

Sento infiltrates a lab and discovers the three governors are the other astronauts from the Mars mission. He’s found out and is chased again by civilians and runs into Kazumi and Gentoku who transform to help hold them for Sento to escape. Ryoka (Touto’s governor) appears before them and becomes the Scissors Lost Smash, wanting to take down Build. Sento gets away as Kazumi and Gentoku are captured and Build then has to face off against Ryuga and Kengo. Ryuga beats him and takes the Hazard Trigger off him. Scissors & Zebra Lost Smashes and Ryuga are used with the Hazard Trigger, Cobra Lost Fullbottle and Great Cross-Z Dragon for Kengo to become Kamen Rider Blood. He easily defeats Sento, but before he deals the final blow, Evolto teleports in and takes Sento away.

Sento awakes on a boat with Soichi while it’s raining hard outside. They talk and Sento leaves, visiting the alley where Soichi “found” him without his memories. In his mind, Sento talks with Takumi about the events leading up to this point including the fact that the Rider System was one of the biggest causes of the war, a thought Sento keeps struggling with. They argue that to win, he’ll have to kill Ryuga, which Sento disregards. Utsumi offers to break Kazumi and Gentoku out of captivity if they beg; Kazumi shrugs him off, but Gentoku is already on his hands and knees.

Ino contacts Sento and demands the Pandora Box in exchange for Ryuga’s life.

Ryuga, Kengo, Mitsuomi and Ryoka are outside, surrounded by civilians still under their control. Sento arrives on his bike with the colored panels of the Pandora Box. Kengo becomes Kamen Rider Blood and Sento goes straight to Genius Form. Ino reveals that his encounter with Ryuga was something they orchestrated. They fight and Sento recalls the memory where his father tells him that Ryuga holds the key to all the events to come. Sento asks why he became a scientist and his father replies for "Love & Peace". He manages to pull Ryuga out of Blood. Blood takes the Pandora box down into the ground, heading for the center of the Earth to destroy the planet. Gentoku and Kazumi appear and take on the Scissors and Zebra Lost Smashes. Misora regains her senses and heals Ryuga from Kengo’s control. The Rabbit and Dragon Fullbottles fuse and they transform into Cross-ZBuild Form.

They head down to fight Blood and while they initially struggle to control their new form, they force Blood back to the surface and perform the Love & Peace Rider Kick. Kazumi and Gentoku win their battles respectively.

The humans under Blood Tribe control have forgotten all about what happened and Sento is a bit disappointed no one knows what they went through. The brother from the beginning of the movie happens to walk by and thank him for saving him.

In a post-credits scene, Sento is working on the White Pandora Box panel, when it suddenly opens up a time bottle that engulfs him. He’s now outside and overhears fighting over the side of the cliff; all the Heisei Riders are there fighting their respective final villains. The Time Majin flies in and lands, Zi-O jumps out. Sento and he briefly talk and Zi-O comments how he already has Build’s power. He uses the Build Ridewatch and jumps off the cliff, the armor attaches onto him mid-fall. He fights the villains for a little while then uses Build’s Rider Kick attack and slides around hitting all the villains.[1]

Continuity and Placement


Kamen Riders

Kamen Rider Build
Sento Kiryu
Kamen Rider Cross-Z Ryuga Banjo
Kamen Rider Grease Kazumi Sawatari
Kamen Rider Rogue
Gentoku Himuro

And Introducing Zi-O

Kamen Rider Zi-O
Sougo Tokiwa



Kamen Riders

Kamen Rider Blood
Kengo Ino
Kamen Rider Evol

Lost Smash

Zebra Lost Smash Mitsuomi Gohara
Scissors Lost Smash Ryoka Saiga


Kamen Riders

Kamen Rider Kuuga Yusuke Godai
Kamen Rider Agito Shouichi Tsugami
Kamen Rider Ryuki Shinji Kido
Kamen Rider Faiz Takumi Inui
Kamen Rider Blade Kazuma Kenzaki
Kamen Rider Hibiki Hitoshi Hidaka
Kamen Rider Kabuto Souji Tendou
Kamen Rider Den‑O Ryotaro Nogami
Kamen Rider Kiva Wataru Kurenai
Kamen Rider Decade Tsukasa Kadoya
Kamen Rider Double
Philip & Shotaro Hidari
Kamen Rider OOO
Eiji Hino
Kamen Rider Fourze Gentaro Kisaragi
Kamen Rider Wizard Haruto Soma
Kamen Rider Gaim Kouta Kazuraba
Kamen Rider Drive Shinnosuke Tomari
Kamen Rider Ghost Takeru Tenkuji
Kamen Rider Ex-Aid Emu Hojo




Guest cast

Suit Actors

Forms and Collectibles Used


  • Bottle used:
    • Build
      • Organic: Rabbit, Taka, Lion (in Build Phone)[4], FullFull RabbitTank (Rabbit Mode), Gold Rabbit, Silver Dragon
      • Inorganic: Tank, Gatling, FullFull RabbitTank (Tank Mode)
      • Other: Hazard Trigger, Genius, Cross-ZBuild Can
    • Cross-Z
    • Grease
      • Organic:
      • Inorganic:
    • Rogue
      • Organic: Crocodile Crack
      • Inorganic:
    • Blood
    • Zebra Lost Smash
      • Shimauma Lost
    • Scissors Lost Smash
      • Hasami Lost
  • Form used:
    • Build
      • RabbitTank Form, HawkGatling Form[5], RabbitRabbit Form, TankTank Form, Genius Form, Cross-ZBuild Form
    • Cross-Z
      • Cross-Z Magma, Cross-ZBuild Form


  • Jelly used:
    • Grease
      • Robot


  • Bottle used:
  • Form used:
    • Cross-Z
      • Great Cross-Z
    • Evol
      • Black Hole Form (Phase 4: Perfection)[6]


Theme song

The theme song for the film is Everlasting Sky[7], performed by Beverly, who also performs the show's main theme song, Be the One. The chorus was first played at the press conference for the film and other subsequent press conferences for the film alongside Kaitou Sentai Lupinranger VS Keisatsu Sentai Patranger en FilmIcon-crosswiki.


  • to be added


  • The title of the film is named after the show's theme song.
  • Ghost being pitted against Gamma Ultima Ebony is curious; in Kamen Rider Ghost, the black-colored Ultima form was accessed exclusively by Takeru's ally Edith, while the enemy Gamma Ultima were colored white.

External Links


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Spring Movies
Standalone Movies
Showa: Kamen Rider vs. Shocker - Eight Riders vs. Galaxy King - Kamen Rider Super-1: The Movie - Kamen Rider Black: Hurry to Onigashima
Heisei: Kamen Rider Den-O & Kiva: Climax Deka - Cho Kamen Rider Den-O & Decade Neo Generations: The Onigashima Warship - Kamen Rider × Kamen Rider × Kamen Rider The Movie: Cho Den-O Trilogy - OOO, Den-O, All Riders: Let's Go Kamen Riders - Kamen Rider 1 - Kamen Rider Amazons: The Last Judgement
Super Hero Taisen Film Series
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TV Series Universe
Kamen Rider vs. Ambassador Hell - Kamen Rider V3 vs. Destron Mutants - Five Riders vs. King Dark - Kamen Rider Black: Terrifying! The Phantom House of Devil Pass - Kamen Rider Agito: Project G4 - Kamen Rider Den-O: I'm Born! - Kamen Rider Decade: All Riders vs. Dai-Shocker - Kamen Rider W Forever: A to Z/The Gaia Memories of Fate - Kamen Rider Fourze the Movie: Everyone, Space is Here! - Kamen Rider Wizard in Magic Land - Kamen Rider Gaim: Great Soccer Battle! Golden Fruits Cup! - Kamen Rider Drive: Surprise Future - Kamen Rider Ghost: The 100 Eyecons and Ghost's Fateful Moment - Kamen Rider Ex-Aid: True Ending - Kamen Rider Build: Be The One
Alternate Universe
Kamen Rider Ryuki: Episode Final - Kamen Rider 555: Paradise Lost - Kamen Rider Blade: Missing Ace - Kamen Rider Hibiki & The Seven Senki - Kamen Rider Kabuto: God Speed Love - Kamen Rider Kiva: King of the Castle in the Demon World - Kamen Rider OOO Wonderful: The Shogun and the 21 Core Medals
Film Series
Movie War
Movie War 2010 - Movie War Core - Movie War Mega Max - Movie War Ultimatum - The Fateful Sengoku Movie Battle - Movie War Full Throttle - Super Movie War Genesis
Heisei Generations
vs. Dr. Pac-Man - FINAL - FOREVER
Go Go Kamen Rider - Kamen Rider V3 (film) - Kamen Rider X (film) - Hanuman and the Five Riders - Kamen Rider Amazon (film) - Kamen Rider Stronger (film) - Kamen Rider: Run All Over the World - Ultraman vs. Kamen RiderIcon-crosswiki - Kamen Rider World - Kamen Rider 3D Battle from Ganbaride - Saraba Kamen Rider Den-O: Final Countdown
Planetarium Movies
Kamen Rider Kiva & Den-O: Den-Liner, Into Space! - Kamen Rider: The Fearful Global Warming Plan