Pandora's Box, which contains incredible energy, has finally been opened.
The extraterrestrial entity Evolt has used its power to achieve his complete form,
taking action to seize control of the country.
Meanwhile, with only the memories of the Devil's Scientist, Katsuragi Takumi,
Kamen Rider Build aka Kiryuu Sento grows desperate to find a way to defeat Evolt.
Good to see you again, Katsuragi.
You're...
Cyborg Utsumi.
So you were calling me that behind my back, too...
That's a mild shock.
But even I'm a Kamen Rider, now.
So you did want to become a cyborg.
I'm not responsible for what happens if you keep mocking me.
Now, watch Episode 39!
Now, fight to your heart's content...
Kamen Rider Mad Rogue!
Utsumi... you betrayed us?!
You don't care what happens to the country?!
It's none of my concern!
As long as I have a place to further my scientific brilliance!
So strong...
You fool...
Don't you realize that you're just making the war worse?!
This is only going to lead to more casualties!
Shut up!
I don't want to hear that from you!
The Evol Driver will dominate all!
Utsumi!
READY, GO!
EVOLTECH ATTACK!
CIAO!
Hey!
Hey! You alright?!
Die!
Not happening!
You guys are lucky I came to check up on you.
Let's blow outta here.
Running won't help.
There's no future for any of you!
Pandora's Box, which contains enough energy to destroy the Earth, has finally been opened!
Standing up to Evolt, the extraterrestrial life form that has gained its power,
are the Kamen Riders!
I'm going to keep walking on tonight
Moving on straight ahead
Leaving only a single set of footprints ahead of me
It seems so vast, but I get the feeling you're out there
Waiting for me somewhere
With a smile that never fades
There you will...
Be the one, be the one
All right!
Who'll never give up on the Earth's future
Be the light, be the light
All right!
You can be stronger
Love will never lose!
Helping, saving, and embracing
Touching our hearts so that it can reach out
Be the one, be the light
Send this message and let it ring out!
What are we supposed to do now?
Evolt seriously wants to take the country over.
But what does he intend to do with it...?
The Unstoppable Genius
Well...
Get rich, and party hard, right?!
Money money money money! Yee-haw!
It's all about the cash!
You make simians look advanced.
What?!
Ook!
Yeahhh.
Don't agree with him!
Evolt has destroyed countless other planets.
But now he's content to rule one...
We need to understand why.
Knowing that isn't gonna help us beat him...
What's wrong?
It's nothing.
Y'know, I'm gonna go get some fresh air!
It's hot!
Now, with the nuisance out of the way, let's address the real issue.
I intend to complete this ultimate item in order to defeat Evolt.
Along with...
Banjou Ryuuga.
What do you mean, along with Banjou?
He shares Evolt's DNA.
But he doesn't remember—
Those memories could return at any moment.
Much like how mine did.
He should be defeated, before he awakens as Evolt.
What's with these memories...?
Just like the other day...
Ever since I started using this...
You're part of me, and together, we've killed tens of thousands!
Like hell I have...
I'm not him.
Now that Nanba's a goner,
I'll be assuming the identity of Prime Minister Midou for a while.
First, since it's already wrecked,
we'll finish seizing Touto and unite the country.
That'll make things easier in the long run.
What about the Kamen Riders?
I can still make use of them.
Bring them in, alive.
I gave you the Evol Driver to accomplish that.
I thought that only a single Evol Driver existed in the universe...
Who made this?
Keep your questions to yourself.
And do what I tell you to.
Where am I...?
You awake?
I see...
Utsumi beat me...
Who'd have though he had it in him?
You know him?
We were both Nanba Children.
I once overheard him talk about what he really wanted.
I just wanted to laugh about trivial nonsense...
Cry over my troubles...
To live a simple life.
And after that, I shot him.
I'm the one who broke him.
Back then, after Himuro Gentoku shot me...
I managed to survive.
But since then, I've...
Don't you realize that you're just making the war worse?!
I'm...
...not wrong!
What?!
It's complete...
I shall call this ultimate power-up item, infused with essence from all of the bottles...
The Genius Bottle.
Am I not great? Am I not terrific?
Am I not... a genius?
So Katsuragi came up with that phrase...
Now I can defeat Evolt...
And Banjou.
I keep telling you, Banjou won't do anything like that.
What is your rational basis for that conclusion?
Because your subjective arguments—
How about trusting your friends?
Friends?
This isn't a children's manga.
What sense is there in such ambiguous thinking?
Do you really feel that way?
Sento had...
When you lost your memories,
you had such faith in your friends, like nobody else I'd ever seen.
And you mean to tell me you don't feel that way, somewhere deep down?
I was a fool to have trusted you.
Faith in your friends can only lead to mistakes.
I can only trust science...
That's gotta bump our Hazard Levels a bit higher.
If you wanna train, say something first!
Can't believe you jumped me like that...
Didn't think you'd fight seriously, otherwise.
Our enemy this time isn't a human.
That means we gotta do what we can, no matter the odds.
Katsuragi Takumi wants to get rid of you.
He said there's no telling when you might turn into Evolt.
Don't worry, though. I'm not gonna let him.
You're about as human as they come.
Actually, you may be closer to a chimp.
Ook!
Man, shut up.
Hey...
If I ever do turn bad...
You'd better put me down.
Just kidding!
This is no good...
Without him around, things are just too mopey.
This is the government office! Seito's forces are attacking!
Requesting backup, ASAP!
This country will belong to Evolt!
What?
Shut up!
We're not gonna let that happen!
READY, GO!
SCRAP FINISH!
GREAT DRACONIC FINISH!
How's that?
Looks like our training's already paying off.
Nice!
You won't be able to save anyone with such paltry strength!
BAT! ENGINE!
EVOL MATCH!
ARE YOU READY?
Transform!
BATENGINE!
Stop it!
You can't fight in that kind of shape!
What's wrong?!
He keeps insisting on helping Banjou and Kazumin!
I have to go...
I'm the one who trampled on Utsumi's dreams!
Just like I did to yours!
I used you people to start a war.
Nothing I can do could ever make up for that!
But... just for now...
I have to fight, for the sake of this country!
Please! Just this once, believe in me!
Wait!
Hey! Are you okay?!
Say something!
What now...?
Compared to the Evol Driver, your Rider System is just a bunch of trash cobbled together!
PIRATE! RIDER SYSTEM!
CREATION! PIRATE!
FINISH!
REGULAR STOPS! EXPRESS SERVICE! RAPID TRANSIT!
PIRATETRAIN! MOVING OUT!
What do you want?
I'm not here to help you.
MAX HAZARD ON!
RABBIT!
RABBIT & RABBIT! CLASH! CLANG! CLASH! CLANG!
ARE YOU READY?
Transform.
OVERFLOW!
RABBITRABBIT!
OH, NO!
SO FAST!
Kamen Rider Build.
It takes its name from building, naturally, as well as construction.
Thank you for your time.
He's actually using it...
I had to adjust the bottles to better fit me.
IT'S A FULL FULL MATCH!
FULL FULL MATCH BREAK!
In that case... you'll face me.
Katsuragi, I thought you of all people would understand
why I would side with Evolt!
I do see the appeal in power beyond human comprehension.
But...
That's not the kind of science that contributes to mankind.
Don't make me laugh!
And what about the Rider System you created?
It was used as a weapon, gave rise to countless casualties...
It eventually restored Evolt's power...
REGULAR STOPS! EXPRESS SERVICE! RAPID TRANSIT!
And it might potentially lead to humanity's destruction!
PIRATETRAIN! MOVING OUT!
That was never my intention!
Yet you knew this was bound to happen.
The fact that you built it anyway shows your passion for science!
You wanted to demonstrate to the world the superiority of your power!
You're wrong...
Just admit it.
What's so wrong with pursuing the potential of science?
It's the power that will unite this country!
That's a wonderful thing.
We were...
...never wrong!
Let us change the world, with the power of science!
I'm not like you.
Build Up.
It's not responding!
What's wrong?
It's strange... I know the construction was flawless!
It looks like this is as far as you go!
Theoretically, I should be able to transform...
REGULAR STOPS! EXPRESS SERVICE!
You're not feeling it enough!
Wanting to help, and to protect someone...
That's what he fought for!
But you don't have any of that, do you?!
Kiryuu Sento was a damn superhero!
It seems you still don't grasp the disparity in strength here.
BAT! ENGINE!
READY, GO!
EVOLTECH ATTACK!
CIAO!
Of all the misguided drivel...
What's this babble about heroes?
The Rider System is nothing but a tool for war.
Look!
Is anyone coming to save you?
Of course not!
There are no heroes!
He believed in me, dammit...
He gave me a future...!
Please! Just this once, believe in me!
Do you still believe in your friends?
Then, show me...
The future you'll build.
What are you doing, Banjou?
I guess this was too much to ask for supporting cast like you.
Sento?
The egotistic superhero has returned!
His memories are back...
Took you long enough!
Now, let's begin the experiment.
GREAT!
ALL YEAH!
GENIUS!
YEAH! YEAH! YEAH! YEAH!
ARE YOU READY?
Transform!
THE TOTALLY FLAWLESS BOTTLE BRAINIAC!
BUILD GENIUS!
AWESOME!
REALLY AWESOME!
That's...
I've got the winning formula.
Kamen Rider Build!
N
E
X
T
Humanity will fight among themselves, and Earth will be destroyed.
The countdown to humanity's extinction begins!
Evolt is experimenting on us...
The countdown to humanity's extinction begins!
The Kamen Riders are being used?!
I will create a new world!
The Kamen Riders are being used?!
I won't let Evolt get away with it!
Revolution of the Apocalypse