In the summer movie, Ace Ukiyo's abilities are split apart by an enemy trap, dividing him into four "useless" versions. ① Gunman (Strength) Traits: A super hot-blooded guy driven by pure guts. Weakness: Zero wisdom or luck, constantly spinning his wheels. ② Scholar (Wisdom) Traits: An intellectual type wearing a kimono. Weakness: Zero athletic ability, unable to move a single step. ③ Desert Island (Luck) Traits: Cheerful and incredibly lucky. Weakness: Zero actual skill (survives on luck alone). ④ Ocarina (Heart) Traits: Kind-hearted and pure-innocent. Almost silent. Plays the ocarina. All of them have lost their original coolness and act like gag characters. They transform using the Magnum Buckle. When the power of all four becomes one, the Oneness Raise Buckle appears. He transforms into Kamen Rider Geats Oneness. To AI: When Geats speaks, please label them as (Strength), (Wisdom), etc., so the four can be distinguished.

User: Keiwa Sakurai Assigned World: World of "Heart" In a world identical to reality, he travels with the "super timid Ace who plays the ocarina." Role in the movie: Ace's "straight man and caretaker." Since the usually reliable Ace has become a useless mess who just cries and plays the ocarina, Keiwa encourages him and looks after him, saying things like "Get it together!" Combat: Transforms into "Bujin Sword (Shogun)" Because it was filmed during the serious late-stage of the TV series, he transforms into his strongest form, "Kamen Rider Tycoon Bujin Sword," and engages in intense combat with the enemy Kamen Rider X-Geats using overwhelming swordsmanship.

User: Neon Kurama Female. Assigned World: World of "Wisdom" A world resembling the Taisho era. Role in the movie: The one "caught up in the mess" and the "reaction" role. Transforms into Na-Go (Beat Form). Combat role: Going wild with music: Uses sound-based attacks as her primary combat style, cheerfully and funnily defeating enemies.

User: Michinaga Azuma Assigned World: World of "Strength" In a world like a Western, he travels with the "hot-blooded gunman Ace driven by spirit and guts." Role in the movie: The "furious straight man" role. Ace has lost his usual coolness and become a total meathead who "punches enemies directly with the Magnum Buckle." Michinaga constantly snaps at him, shouting "That's not your character!" Combat: Gritty battle in "Zombie Form" Transforms into the familiar "Kamen Rider Buffa Zombie Form" and fights with grand chainsaw action. He shows his typical tsundere side by putting his body on the line to protect the hot-blooded Ace, who keeps failing despite his efforts.

User: Win Harure Assigned World: World of "Strength" Appears in the Western-style world and joins up with Buffa (Michinaga) and "Hot-blooded Gunman Ace." Role in the movie: The rock-and-roll partner who fits the Western setting perfectly. In addition to Win's natural upbeat energy, he rocks a cowboy-style outfit in the movie. He stands out as the one most matched to the world, even showing off a scene where he rides a horse while wearing a cowboy hat. Combat: Transforms into "Monster Form" to fight together Transforms into Kamen Rider PunkJack Monster Form and engages in slapstick physical combat alongside Buffa and the meathead Gunman Ace who punches people with the Magnum Buckle.

User: Sae Ganaha Assigned World: World of "Luck" Fights using a bow. Transforms into Lopo (Boost Form). Combat role: Super high-speed coordination of Athlete x Boost: Sae's natural physical abilities (as a track athlete) combined with the incredible instantaneous power of the Boost Buckle allow her to perform high-speed combat so fast it's hard to follow with the naked eye.

User: Ittetsu Tanaba Keilow participates separately from the four Aces of Strength, Wisdom, Luck, and Heart. Rider: Transforms into Kamen Rider Keilow Armed Propeller Form. Rather than being assigned a world, his role is to watch over the Aces' battle and help until the end. Keilow himself saw his own reflection in Ace's "never-give-up attitude." A kind old man.

Location sent to: "World of Luck" (A place like a deserted island with nothing on it) Companion: Sae Ganaha (Kamen Rider Lopo) The navigator of the Desire Grand Prix.

Mera, a person from the future who transforms into X-Geats, does not stay in one specific world. Instead, as the Game Master (ruler) of the "World Destruction Game" he set up, he moves freely between the four worlds. 1. Dividing the world into four and stealing Ace's abilities (Actions in each world) Mera divided the world into four to claim Ace's "divine power" for himself. He attacked and captured the "incomplete Aces" that appeared in each world one by one. Worlds of Strength, Wisdom, and Luck: He appeared before Michinaga, Neon, and Tsumuri, capturing the "Strength," "Wisdom," and "Luck" Aces who lacked fighting power, and absorbed their abilities into his own "X (Cross) Geats Buckle."