>> Okay, this is going to work, right?

This is definitely going to work.

I know this is going to work.

What if it doesn't work?

>> It will work, Jax.

Once we make our green roof, the house should cool down.

I hope so, or the guests will melt along with the ice sculpture.

>> Tiff, Riff, let's get these plants onto the roof.

>> How many trays do we put up there?

>> Huh, good question.

>> We can make an estimate, you know, a thinking guess.

>> Can't... Mm-hmm...

I think...

It's a big space up there!

>> You think four trays will cover it?

>> Nope.

I'd say the roof is two times the size of those four trays.

So if the roof is approximately twice the size of these four trays, we need four more trays, and four plus four is eight!

We need eight trays of plants, please.

♪♪ ♪♪ ♪♪ >> Hmm, not enough!

>> I guess our estimate was low.

>> That's okay.

An estimate doesn't have to be exact.

That's why it's an estimate.

Now that we're close, we can adjust our numbers a little.

>> Four more trays should do it!

>> Four more trays!

Let's get them up there!

>> Roof covered!

The estimate worked!

>> Good job, guys!

>> It's beautiful.

>> Another benefit of our green roof.

>> Turn on the hose!

>> Water coming!

♪♪ >> Patooey!

Time to drink.

[ Harmonica playing ] >> Buzzy?

>> Yeah, Deedee?

>> I don't think the boss is coming for us.

♪♪ >> [ Sighs ] I don't think he's coming either, but that's okay.

The food is good.

♪♪ >> Yeah.

You're right.

♪♪ >> Yes!

Before, it was 83 cyberdegrees.

Now it's 80!

>> That's 3 degrees lower!

>> It worked!

The green roof is helping cool down the house.

>> Okay.

We still have lots to do before the guests get here.

>> Oui!

My cucumber sandwiches still need the cu, oh, and the cumber!

[ Splash! ]

Huh?

Huh?

No!

>> The roof is leaking?

♪♪ >> Found the leak!

>> When we watered the plants, some of the water went right through the roof.

>> I don't understand.

We waterproofed the roof when we built the house.

>> Yeah, but we didn't plan for plants on the roof.

>> Or probably all that extra water.

>> No problem!

We can put down thicker waterproofing so the roof won't leak.

>> It's not on my list, but begin Operation Waterproof the Roof!

>> There was the time we entered the three-legged cyborg race, and Delete tripped, and we all tumbled to the ground.

[ Chuckles ] And another time... >> Oh, stop it with Memory Lane, will you?

It's hard to make a genius plan when all you hear is Buzz this and Delete that.

I am sick of it!

>> I was sick once.

Buzz and Delete made me chicken soup with extra noodles.

>> That's it!

I'm at the end of my broomstick!

It's either me, who knows what you did and will turn you in to the king if you don't do as I say, or Buzz and Delete.

You decide.

Well?

>> I'm thinking.

I'm thinking.

>> A little further.

There!

>> Perfecto!

This ought to stop the leaks.

>> Let's put the plants back.

>> Oh, I do hope this works.

[ Faucet squeaks ] >> Water coming!

>> Patooey!

Am I ever going to learn?

>> No drips here.

>> None here either.

>> The waterproofing worked.

>> And, guys, more good news!

It's 74 cyberdegrees.

One, two, three, four, five, six degrees lower than before!

>> My ice sculpture is so happy!

>> Thanks, guys.

I don't know what I would've done without you.

>> Aw.

[ Doorbell rings ] >> Our guests are here!

♪♪ Welcome!

Glad you came!

>> Welcome!

Greetings!

Glad you came!

[ Indistinct conversations ] >> So, Your Majesty, I, well, we... You see, it all started when... >> Out with it, Hacker!

>> Oh, all right.

It was I, the Hacker, who damaged Mount Evermore, not Buzz and Delete.

>> I see.

>> So perhaps you could let them go free.

>> Boss!

>> Boss!

>> Ooh, boy, did we miss you!

>> Did you miss us, Boss?

>> Not a chance.

>> Oh, come here, you.

Oh!

>> Okay.

No need to get too mushy.

Let's go home.

>> Not so fast, Hacker!

Now that I know it was you, it's only right that you make amends.

>> Amends?

>> Why did you tell the king my plan to take over Happily Ever Afterville?

>> I couldn't bear to do this without you.

>> Seriously, you expect me to believe that?

>> Stop complaining and hand me that chisel.

You're doing it all wrong!

>> Oh, please, Hacker.

I can chisel better than you ever could.

Watch and learn.

>> Boss, I think you missed a spot.

>> Could someone bring us more pancakes?

♪♪ >> This just in -- the king is having Mount Evermore rebuilt!

>> Woo-hoo!

All right!

>> Let's party!

>> Woo-hoo!

>> These cucumber sandwiches are amazing.

>> Oh, oui, I know!

Merci!

>> Great party, Jax!

>> Yeah!

The best!

You are an amazing party planner.

>> I did do a pretty good job, huh, despite a few setbacks.

>> Nothing a green roof couldn't fix.

>> Woo-hoo!

♪♪ [ Grunting ]