(Souichi, Ryuga, Akame and Izuku prepare to transform.)

DEMONS DRIVER!

(They pull out their vistamps)

SPIDER!

JACKAL!

MAMMOTH!

COBRA!

(Then they stamp their drivers.)

DEAL!

CONFIRMED! EENY, MEENY, MINEY, MOE!

COME ON! MA-MA-MAMMOTH!

WHAT'S COMING UP?!

Riders: Henshin!

DECIDE UP! DEEP. (FUKAKU) DROP. (OCHIRU) DANGER. (KIKI) KAMEN RIDER DEMONS!

VERSUS UP! OVERDRIVE! POWER DIVE! KAMEN RIDER LIVE! JACKAL!

BUDDY UP! KYODAI NA KIBA MOTSU! RIKU NO BOSS! MAMMOTH! HANAKKARA CLIMAX DA ZE!

LIBERAL UP! AH! GOING MY WAY! KAMEN RIDER! JA! JA! JA! JEANNE!

(Then they transform into Kamen Riders and proceed to face some Atlesian Soldiers.)

Revi: Let's go at once!

Vice: Let's do it!

Jeanne: Let me show you how strong I really am!

(They they fight the Atlas Soldiers.)

(Meanwhile at Atlas Military, Ironwood is seen in his desk as rage is clear as day in his eyes.)

Ironwood: (enraged) Seriously now? They have gone too far! (catches a communicator) Send Cyborg here.

(Cyborg then comes in.)

Cyborg: It's those Kamen Riders again?

Ironwood: Yes, and they killed Winter and the Ace Operatives.

Cyborg: Why didn't you call the others?

Ironwood: (sighs) The other headmasters are focusing on the traitors, and plan to send the rest of the remaining Union students to where they're hiding.

Cyborg: And how can I exactly help you?

Ironwood: I want you to deactivate the four humagears. Forever. Once they get destroyed, use your hacking skills to undo the hacking they did on Ciel and Penny.

Cyborg: What about the other four riders who are advancing?

(Cyborg then shows the four riders defeating the Atlas Soldiers.)

Ironwood: I was planning to deal with them myself, but I have some backup plan.

(Back to the four riders, they get close to the military base, and then they hear a voice.)

????: How pleased you are to kick away, Kamen Rider Demons.

(Then the four look to see an adult figure standing in the roof of the Military Base.)

????: My name is Gregory Arc... of the Arc Family.

Jeanne: (pulls out a vistamp) Yeah... guessed as much.

TURTLE!

(Gregory them jumps off and lands on his feet. Then he pulls out a driver and places it on his waist.)

ZERO-ONE DRIVER!

Gregory: I heard that disgraceful son of mine joined your alliance. He couldn't be more disappointing. Wasn't faking his own scripts enough for him?

Demons: (pulls out two vistamps) He told me you've never bothered to train him, and hearing what you said, I'm not surprised as I thought I would be.

BATTA!

SCORPION!

Gregory: Do you have any idea of how much he disgraced the name Arc? How he threw it in the dirt?

(Demons stamps his driver)

ADD!

Demons: Even though HE was the one who saved the very one who made his life a living hell at that pathetic excuse of an academy?

(Demons stamps his driver again.)

DOMINATE UP! BATTA! GENOMIX!

Gregory: War is a cruel parent, but an effective teacher. Its final lesson is carved deep in my psyche: That this world, and all its people, are diseased. Free will is a myth. Religion is a joke. We are all pawns, controlled by something greater: Memes. The DNA of the soul. They shape our will. They are the culture -- they are everything we pass on. Expose someone to anger long enough, they will learn to hate. They become a carrier. Envy, greed, despair... All memes. All passed along.

(Demons stamps his driver with the scorpion vistamp)

ADD!

Demons: How abbout "full of shit"?

(Demons stamps his driver with the scorpion vistamp again.)

DOMINATE UP! SCORPION! GENOMIX!

Gregory: You can't fight nature, Demons. Wind blows, rain falls, and the strong prey upon the weak. You see your weapons as something that saves lives -- a means of justice. Now there's a pretty meme. Exquisite! It's spared you the burden of all the lives you've taken... Absolved you of guilt when you enjoyed it.

(Jeanne stamps her driver.)

WEAPON PONPON! PONPON!

REBUDDY UP! AH! TURTLE! DADADADAN!

(Gregory resumes his explanation as he pulls out a progrisekey.)

Gregory: That is, until the illusion was broken. Don't be ashamed. It's only nature, running its course. You have no choices to make. Nothing to answer for. You can die with a clear conscience.

HELLRISE!

AUTHORISE!

Gregory: (smirks) Henshin!

PROGRISE! HELL'S ENERGY HAS DESTROYED THE WORLD! HELLRISING HOPPER! HEAVEN OR HELL, IT DOESN'T MATTER!

(Gregory becomes the Hellrising Hopper.)

H. Hopper: But maybe I'm misjudging you. You're fighting for your ideals after all.

Demons/Jeanne/Live: Now you're being nasty. How about we give you a demonstration of our powers? It's time to decide between right and wrong!

(Then they start fighting as Demons clashes with Hellrising Hopper.)

H. Hopper: Give it up!

(Demons lands some hits on Hellrising Hopper, who then backs away.)

H. Hopper: You will burn here!

(Hellrising Hopper kicks Demons.)

H. Hopper: To hell with you.

(He clashes with Live.)

H. Hopper: Death approaches.

(Live lands some hits on Hellrising Hopper, and they have a clash.)

H. Hopper: Ridiculous...

(Live keeps hitting Hellrising Hopper while blocking some of his attacks.)

H. Hopper: These are the real Kamen Riders?

(Then Hellrising Hopper collides his punch with Live's, and they do it again before Live kicks him down.)

H. Hopper: (get up) Is that your best?

(Then Jeanne shoots Hellrising Hopper, giving Revi the change to kick him down.)

H. Hopper: So... you are strong... (gets up) But I have won this fight!

(Hellrising Hopper then uppercuts Revi before showing his true power to the heroic Kamen Riders. But then Demons manages to counter his next move, but Gregory isn't done yet.)

H. Hopper: I'll put you under, weaklings. What will you do now, Kamen Riders?

HELLRISING IMPACT!

Demons: Together everyone!

MORE!

HISSATSU SHONIN!

BATTA SCORPION DEMONS REQUIEM!

JACKAL JUSTICE FINISH!

MAMMOTH STAMPING FINISH!

TURTLE LIBERAL SMASH!

(Demons jumps into the air and performs a flying kick, landing on the ground near Hellrising Hopper. He then delivers several kicks and stabs with the Demon Ridolstinger before jumping into the air once again. Demons performs a dropkick with the Demon Ridolstinger coiled around his body, producing a dome of red energy in front of him.)

(Live moves at high speeds with his body is surrounded by gold energy. While moving, he individually fires gold blade-shaped energy projectiles at Hellrising Hopper. He then jumps into the air and fires a volley of the blade-shaped projectiles at him.)

(Revi throws both Mammoth Gashers, which simultaneously slash Hellrising Hopper. As Revi battles Gregory himself, the Mammoth Gashers continue flying around and occasionally slash him. Revi is soon joined by Vice, who fights alongside him. The two Riders then simultaneously punch Hellrising Hopper, creating a red shockwave, before the Mammoth Gashers slash him for the final time.)

(Jeanne charges Lovekov's barrel with green energy while the sight glows red and her own visor glows green. She then fires a green energy artillery shell that explodes upon striking.)

Vice: All together, everyone! 3! 2! 1!

(Hellrising Hopper screams in pain until he explodes.)

(Meanwhile, Horobi is seen ripping off Cyborg's head.)

Horobi: You have made a wrong move. And you paid the price for it.

(Then the humagears along with the two Kamen Riders see the four ready to invade the Atlas Military, and follow them as the screen fades out.)