Ryan: Previously, on Mech-X4...
I'm behind the monsters.
Harris: Harper built a giant monster heart.
And we need to figure out how to destroy it before he gets it to the school.
- Something that size can destroy the world. - That's not gonna happen.
Ryan: He's pretended to care about us.
He's turned the city against us.
Enough is enough.
Harper: You're only gonna take me by surprise once, Ryan.
Hello, guys!
And goodbye.
- (screaming) - (alarm sounding)
- Move! Move! Move! - Let's go!
Harper? What have you done?
You know, I could give you a big speech about being minutes away
from plunging my giant monster heart where your school used to be,
to create the monster that will destroy this world.
Which you kinda just did.
So I'll keep this brief.
I know your mother is inside there.
Give her to me or she burns with the rest of humanity.
I'm gettin' real tired of this guy talkin' about our mom.
X-Weapon that jerk?
X-Weapon that jerk.
Mech-Execute!
(grunts)
Aah!
(screams)
(growling)
It did nothing?
(roaring)
(theme music playing)
(roaring)
Harris: Oh, no.
That was the biggest weapon we have.
Harper: And I was ready for it.
You know, it's a shame, really.
Ryan, Mark, Harris...
Huh?
I had a spot for each of you in my new world.
Harper, we'll stop you.
No, you won't.
You don't have the power,
and you don't have time.
But you do have Grace.
So I'm not inclined to tear your little toy apart.
- Sweet! - For now.
- I always fall for that. - I'll give you a few minutes
to say your goodbyes before you turn Grace over,
but... don't take too long.
Once my monster heart hits that ooze,
- it's game over. - (screen chimes off)
(growls)
He... He just left?
He'll be back unless we give him Mom.
Which is never happening.
Unless he tears us open like a can of tuna to get to her.
Sorry. Kinda terrified here.
Ryan: We're going to protect Mom.
And we're gonna stop Harper from destroying the world.
We're the only ones that can do this.
This is what this robot was built for.
(clearing throat)
Hey!
(chuckles)
Mom!
- Uh... - Look who's here!
You're awake.
Where am I?
What is this?
Uh... this is Mech-X4.
You're inside the robot that's been fighting all those monsters.
And we're the team that controls it.
What?
Well, now you know why my grades might've been slipping a little bit.
(awkward laughing)
Um, can you guys give us a minute?
Others: Excuse us.
No. No.
Bye, Ryan's mom.
It's my fault she's angry. It's my fault Ryan had to lie to her.
That's not really true, Leo.
You built this robot for a technopath
who happened to be our best friend.
- And a kid. - Yeah. So technically,
it's Ryan's fault that he put us in danger
because you put Ryan in danger, if that helps.
No, not even a little bit, not helping at all, no.
I'm sorry, was I supposed to crack a joke there?
- Because again, I am terrified. - Yeah.
So, the world is ending?
Yes.
And you have a power?
And a robot?
And the ability to stop Seth.
Yes.
And you told Mark, Harris, and Spyder about it, but not me.
I was afraid that you would try to stop me.
And you'd have been right.
The city needed him, Mom. It needed us.
Don't think you're not in trouble for keeping this from me, too.
You lied.
Risked your lives.
To save lives, Mom. Which I have to do now.
Like I said, Harper is going to end the world.
Hey, Mom, I wanted to tell you so many times.
No... I'm so angry!
And so...
I don't know.
Betrayed? Left out?
(mutters) Not helping.
Stunned.
My boys.
Risking it all, to help people.
Heroes.
Fools.
- What? - Whoa!
Mark: What was that?
Ryan: What's she doing? Mom?
Mark: Wait!
She's in the elevator.
Stop her!
She's already out of the robot!
Everybody! Control center! Now!
Spyder: What happened?
- Where's your mom? - I don't know.
Can you track her?
Scanning.
Uh... guys?
He was waiting for us?
No. He was waiting for her.
(car alarm blaring)
What's happening?
What's wrong with her?
What did you do?
Guys, I design monsters.
Big ones, like this monster I'm in, and little ones,
like the one I placed in your mom's brain.
And that one?
That one is making some powerful suggestions.
Leo: Ryan! Mark!
You'll never guess what I found!
I ran some scans on Grace, and I saw that...
- Everything's already gone south, hasn't it? - Yeah.
Hey, Leo! Glad to see you could join the party.
And you're finally the monster you've always been.
I'm warning you, let her go!
Hey, you know what? I just... I just realized,
with Grace out of the robot, I don't have to pull my punches.
(grunts)
No!
(grunting)
Ryan!
(groans)
(alarm sounding)
Critical hit! Get us outta here!
I can't... focus!
Emergency evac! Tango!
Copper! Muttonchop!
(roaring)
(alarm sounding)
(coughing)
Hey... you all right?
I'll live.
How's the robot?
It's gonna take some time to get it up and running.
Mom doesn't have time.
So we make some.
We have to slow that monster down
before it gets back to Harper Futuristics
and launches that missile.
It has a weakness.
This monster is different.
Harris is right. Harper is the brain of that monster.
If we distract him, if we hurt him...
and I really, really, really, really, really wanna hurt him,
we slow the monster down.
Give you time to get your mom back.
This could work.
- (groans) - What are you thinking?
Something crazy.
Oh, crazy is my favorite!
Wooo!
- (screaming) - (roaring)
Go! Go! Go! Let's go! Don't look back!
(roaring)
It's the biggest monster we've ever seen!
It's headed to Harper Futuristics!
- Where is Mech-X... - (roaring)
Ha! (Laughs)
Aw, geez. This generation... Okay, next world, no camera phones.
Eveybody on point?
Leo and I get Mech-X4 up and running.
Mark: Spyder distracts the monster, I slow it down.
Good, and I'll get Mom back, and we will not let him launch that missile.
(grunts)
Mark: You got the sonic weapon?
Yeah. I'll buy us as much time as I can.
Hey! Hey, Seth Fartface!
It's me, Spyder?
That kid you really hate!
The kid who wrecked your executive bathroom?
I've had enough of this kid.
(growling)
Spyder: Hey, Mark, you in position yet?
Almost!
Hey, Harris, you beefed up the bounce-belt, right?
- Why? - Just wondering.
Time to squash this Spyder!
Yeah, you! Phony Stark!
(shouts)
Nice hairline! Does it come in any style other than receding?
Why! Won't! You! Stop! Talking!
I'm on my way.
But you gotta keep him still!
(roaring)
Surprise!
(piercing sound)
(both yelling in pain)
Woo-hoo-hoo!
(groans) My legs!
(roars)
I am awesome!
- Yeah! - That was crazy!
(screaming)
I am carless.
Mark: Hey bro, we slowed Harper down as best we could,
but he's already back on the move.
Here we are, Grace.
This... is where the end begins.
Everybody's in the bunker as requested, sir.
Excellent! Thank you, Morris.
Is the monster heart ready to launch?
Yes. Wait. Monster heart?
Yeah, that's what the kids call it. I like it, it's kinda catchy.
So? We good to go?
The trigger's now shielded from the technopath.
You can launch it anytime.
Excellent.
(grunts)
You're not launching anything!
(shouts)
(grunting)
Now, get away from my mom and give me the trigger.
Or else I'll give you a haircut, from the inside out.
Oh, okay. One, edgy.
And two... I don't have it.
You wanna blast the person holding the trigger, Ryan?
Go ahead. She's standing right over there.
Mom... give me the trigger.
You don't wanna do this.
If you press that button, it is literally the end of everything.
He makes a very good point, but here's mine... Do it!
I don't care what Harper put in your brain, you're stronger than it.
Okay, this whole family moment, it's adorable, but you know what?
I'm bored, and I want it over.
Ryan... you're not gonna hurt your mom.
You're right.
And she won't hurt me, no matter what you did to her.
You're my mother.
You adopted me. You fought for me my entire life.
I know you're in there! So fight it!
Finish it!
(grunts)
She just finished it, jerk!
(screams)
Mom! Mom!
Hey! You beat it!
Aah!
It's over, Ryan.
You lose.
Come on!
It's not over yet!
They're going after the missile!
That's not gonna happen.
Mom's out in the med bay.
Leo's watching her.
Okay. Harris?
Calculating the arc. Got it.
We won't have a lot of time before that giant monster heart rocket plunges into the ooze.
Then we need to get there first!
Company!
(growling)
(grunting)
Whoa!
(roaring)
Spyder! Keep him off us! Go for the eyes!
(groaning)
Guys, it's not going to stop him!
Then we need a missile big enough that can!
How about that one?
The big monster heart missile?
Go for it!
Grappling Grip?
Both: Grappling Grip!
No!
All right, you heartless monster...
I believe that belongs to you!
Yes!
- Whoo! Guys! - Dang, son!
- Yeah! - Woo-hoo!
Hoo!
- We did it! - Yeah!
- Mom? - Hey, are you okay?
Where... Where am I?
You mean, you don't remember? There was a... a monster attack,
and they had to evacuate everybody in the area.
(sighs) And Seth Harper was the one making all the monsters.
That's the last thing I remember before... (groans) waking up here.
Well, that's convenient! (laughs)
I mean, um, I'm just so glad that you're okay!
Yep. Smooth.
(groans) That robot.
Ever since that thing showed up,
it's been one monster after another.
You guys stay away from that thing, you hear me?
- Yeah! - Yeah, uh, Mech-X... what?
Nailed it.
The good news? The city survived.
And the beast that terrorized us
seems destroyed.
Authorities are searching for billionaire Seth Harper,
who is suspected to be behind this.
All we know for sure is this robot saved us all from something terrible.
Again.
All I have to say, is Casstag grateful,
Casstag thank you.
And to the person who pulled me to safety, I owe you one.
Ryan, she owes you one!
Get me a date with her!
He can't tell her it's him.
Tell her it's me.
Tell her it's me!
(laughing)
What?
Just, a little while ago, we couldn't even stand
to be in the same school together.
And now, we just... we saved everybody.
That's pretty cool, little bro.
I still have so many questions, though.
I know.
About your birth parents, your powers.
And the ooze. The ooze is still out there.
What if someone starts using the ooze to make monsters?
Then we'll do what we always do.
We'll kick butt.
As a team.
Spyder: As friends.
Mark: As a family.
So? What are you waiting for?
Mech-Execute!
(theme music playing)
(barks)