We traveled to the Garden Galaxy station,
where we met Jazmin! 

She's shy, but she really knows her stuff!
We learned all about sequencing thanks to her.

Hehe...thanks to you two, I worked up the courage to talk to the rest of my station. They'd been arguing over our stars...

After I talked to them, everyone agreed to make
all different kinds of garden stars!

With peace back in the station,
Jazmin joined us for the adventure...

But as we approached the next galaxy,
a claw tried to hit our ship! Where did we end up now?

Whew...just managed to dodge that, whatever it was...

That was one of our adorable cat stars! Welcome to the Cat Galaxy station!

Hold up, aren't you Ed? We just met at Fruit Galaxy...why are you here now?

Hm? No, we've never met before! You might have met my twin though!

But yes, my name is Ed-

AHEM!

Um..h-hello?? Oh gosh, more new people...

Allow us to introduce ourselves! I'm Lem...

...and I'm Cordy!

And we'll take over every galaxy!

Uh...

That's right, tremble in fear! We're Wolf's most trusted followers,
on special orders to stop you!

So you're his sidekicks? We're not scared of you.

You seem confident. But let's see how confident you are
once we drain all the stardust from this station.

So you're here to steal from us, huh? That's just like Wolf...

You...! Say one more bad thing about Wolf, I dare you!

Relax, Lem. Let's head to their stardust reserve and start our mission.
What could they possibly do to stop us?

You're right, Cordy! We don't need to worry about these fools. Let's go!

W-what are we gonna do?!

Hm...if we restore the galaxy's stars like we usually do,
that would fix the stardust problem. Right?

It would help for a bit, but they could just steal that stardust as well.
We need a way to distract them, or slow them down.

Um...could we just ask them to stop and give the stardust back?

I don't think...actually, wait. That's a purr-fect idea!
While Cordy and Lem are busy draining our stardust...

I'll secretly disable parts of their spaceship! That way, they'll need
to use the stardust they took to power the station's spaceship repair!

I see...they won't be able to leave this galaxy otherwise.
Meanwhile, the three of us can solve puzzles to help restore the stardust.

Got it — we'll leave the spaceship to you, Ed. Luz and Jazmin, are you ready?

Ready! Star Transformer, make me a star!

Okay, here's our first puzzle. I see the Starpad's in the top left. There's two bridges we need to turn on to reach it.

Yeah, we're kinda trapped up here...
not much we can do other than code the bots.

Since we need to code two bots this time, figuring out the right sequence of steps is a little more complicated.

So let's start with the basics:
which of the two bots should move first?

The Walker?

Or the Grabber?

Actually, could both bots start moving at the same time?

I'm not sure yet. Let's try some things and see what happens.

Let's use process of elimination to figure out which bot should move first! What can each bot actually do right now?

The Walker can either go to button A or button B. That's it.

The Grabber can reach cube tray C or cube tray D.
But we can't do anything with those without a cube.

There are two cubes here, but the bridges to both of them
are off. So the Grabber can't do anything right now.

In that case, we shouldn't move the Grabber first.
That also rules out moving both at the same time.

So the Walker has to move first!
Let's figure out what its first line of code should be.

The Walker can go to either A or B...both buttons turn on
a bridge. Maybe start with B, since it's closer?

Let's try it.

Hm...it did turn on a bridge, but now the Walker can't move anywhere else. That doesn't seem good. 

Ah! That's because the Walker crossed a drop bridge — a special kind of bridge that collapses after being crossed once.

Sounds like we should avoid those bridges until the end,
if we can. Let's make the Walker go to button A first instead.

Agreed, I'll change it.

Great, now the left bridge is on.
That gives the Grabber a path to a cube. 

Okay! Now that the Grabber can do something,
let's switch to coding the Grabber!

Hm? Why not just keep coding the Walker until it's done?

Well, you could try it that way. But that might be a little tricky.

Since the bots need to help each other move around
the puzzle, they'll need to take turns moving.

I see. The Walker just had its turn to move, so now it's the Grabber's turn — that's what we need to code next.

Right. Since the left bridge is on now,
the Grabber can go pick up the cube at position E.

I'll switch to the Grabber and add that code.
Then, let's test it out.

The Grabber fell before the Walker made it to button A...

Ah! Right. Since the bots need to take turns,
they also need to wait for each other.

They can do that?

Yep! Since bots can trigger events, like pressing a button, other bots can listen for those events using "wait for".

Makes sense. So before the Grabber picks up the cube at E, we should have it wait for the Walker to step on button A.

I'll add that to the Grabber's code.
Then we can run it to make sure it works.

That's better. Now we can tell the Grabber
to drop the cube in one of the cube trays.

Between cube tray C or D...it should probably drop at D first.
If it went to C, it would cross the drop bridge and get stuck.

Sounds good. Let's run it again.

Yay, now one of the bridges we need to cross is on!
Next, the Grabber should...

Oh wait, it can’t do anything again. We need another cube
for cube tray C, but the bridge to the second cube is off.

If the Grabber is out of options,
let's switch back to coding the Walker.

What should the Walker's next line of code be? Let's think. 

Remember, the bots are taking turns. While the Grabber does its turn, we need the Walker to wait before continuing.

Right, I'll add that as the next line of code.
But which object should the Walker wait for?

Hmm...not button A or B, since only the Walker
can reach those. A bot can't wait on itself. 

But the Walker can wait for the Grabber. Since the Grabber ends its turn by using cube tray D, the Walker can       "wait for D"   .

Got it. Now that the Walker is waiting its turn,
what should it do next?

It should go to button B, since that turns on the other bridge. 

Okay, I think that's it for the Walker. Let's run it and check.

Looks good! Now we just need the Grabber
to move the remaining cube!

I'll switch back to the Grabber.
First, let's make sure it waits before moving again.

Since the Walker ends its turn by going to button B,
the Grabber needs to   "wait for B"       .

Once that bridge is on, the Grabber can go
pick up the cube at position F...

...Then drop it at cube tray C.

And that should turn on the second bridge we need to cross! Let's try it.

It worked! Thanks to us, the bots learned great teamwork.

Yep, now they know how to "wait for" their turn!
Okay, onto the next-

Well well well, looks like your little team
restored one star! Big deal!

Uh huh...shouldn't you be helping your friend or something?

Oh please! Cordy can handle it on her own.
I'm here for some entertainment!

Psst, Valeria...I don't know why he's doing this, but isn't it good for us if they're separated? They'll work more slowly that way.

Oh! True...

Well Lem, we're headed to the next puzzle...not that
you could solve it. Better hurry up or we'll leave you behind!

Oh yeah?? Bet I could solve the next one in my sleep,
unlike you three!

He took the bait so easily...

We just need to finish our part here, and Ed will do his.
We're counting on you, Ed!

Lem, I'm done draining all the stardust!
We're about to bring Wolf the biggest haul ever...!

Haha, he's gonna be so proud of us! Quick, let's head back to our...

...Our spaceship...

IT'S WRECKED?!

Teehee!

YOU...! I should've known you were up to something!!

Wait...not only that, you three restored all of the galaxy's stars??

Yep. We even made a new star!