That part of the reef is so beautiful.
Mimmi, Sirena and I swim there all the time. It's...
It's kind of special to us.
I hope they don't mind you taking me there.
Why would they mind?
You have told them about me, haven't you?
What?
I just... I haven't thought of a way to make it sound okay.
Just say, "Erik and I like each other, so we're together now."
Why complicate it?
Because it is complicated.
I do want to tell them.
That's a relief.
I just need to figure out how.
There you go.
One triple-choc-fudge milkshake with extra ice cream.
Ah, just the way I like it. Thanks.
- What's with the map? - Ah, it's not a map.
It's actually a nautical chart.
In fact, it's an app packed with hundreds of nautical charts,
all fully interactive.
Wow. Stop the traffic. That's really exciting stuff.
- Sure is. - Seriously, I'm impressed.
I never knew that a boring old map could be so...
Oh, what's the word?
Boring.
I'll have you know this boring old map is an investment in success.
I can zoom in anywhere on the coast and have
real time tidal and weather reports,
- and a fish finder. - Will wonders never cease?
I think I need to lie down, I'm dizzy with excitement.
Oh, man, this just gets better and better.
So, what do you think?
What? My new hairstyle?
- It's for the gig tonight. - It's pretty.
David wants to try a new jazzy soul style for the set tonight,
and I need a new look to go with the new music.
And a new dress, perhaps?
I like the way you think.
I'm off to the café. I'll see what Evie has.
Hi.
Where were you? - Swimming.
Why didn't you wake us?
Um...
I just needed to get away.
- Again? - I, uh...
I met up with Erik.
- Erik? - Yeah, he was out there, too.
We had fun.
Without us?
There'll be other times.
Sure.
Here, let me take that.
- You sure you're feeling okay? - Sorry?
I thought you might have been sick.
It is the third time you've been late this week.
Uh, yeah, sorry about that. I got sidetracked at the beach.
Yeah, well, try not to let it happen again.
Someone has to pick up your slack and that someone is usually me.
- Hey, you got a sec? - Uh, actually, I kind of don't.
I really think you're gonna want to hear this.
Give me a three-word synopsis, Cam. I've got to get this stuff inside.
Operation Merman Chamber.
So, here's the photo you took in the merman chamber of the pedestal
and here's Mako Island.
Is that amazing or is that amazing?
- Wow. - I'm right, aren't I?
The pedestal's an aerial representation of Mako and the reef.
- You're really onto something. - That's not all.
These inlays around the pedestal, see where they sit?
They correspond to the five major rocky outcrops on the reef.
The fishing's always good there.
Maybe there's more than good fishing there.
My thoughts exactly. I'm going to call Zac.
Why don't we check it out first?
I think Zac would want to know about this.
There's not a lot to tell him yet.
Let's see if there really is something to your theory before...
wasting his time.
Makes sense, I guess.
Aren't you supposed to be working, Erik?
Uh, actually, I've come down kind of fluey.
Can you tell David?
Sure.
Get well.
We're right above the first outcrop.
What are we waiting for?
So, are you feeling good about my idea, the jazz-soul thing?
Yeah, but I wanna make sure I have the right look.
You look perfect no matter what you wear.
That's sweet, but not helpful.
I need a new dress. Something that suits jazz and soul.
Hmm, let's see what we've got.
Uh...
Ah!
- This would look gorgeous on you.
- Hey. - Hey.
Have you seen Cam or Erik?
- No, why? - There's something going on there.
Like what?
Well, they were looking at this new fishing app that Cam's got
and Erik seemed really excited about it.
And they left together.
Why would Erik care about a fishing app?
It's not quite what I'm after.
Too much jazz, not enough soul.
Got anything else?
Let's see.
Are you okay?
Yeah, yeah, I'm fine.
Ondina?
Okay.
Hypothetically...
what would the pod think if Erik and I were...
seeing each other?
- Like? - Like friends.
Good friends.
You know the pod won't like that. Mermen aren't their favorite people.
I guess.
It'll be hard to tell them.
So, you and Erik are pretty serious?
I like him.
What do you think of him?
- I don't really know him that well. - You'd really like him,
if you just spent a bit more time with him.
I hardly spend time with you.
Okay.
Well, we'll hang out.
- Great. - Yeah, the three of us.
I should probably warn you, Sirena, I'm running out of options.
That looks nice. - Nice?
What's wrong with nice?
- I'm aiming a lot higher than nice. - Okay.
This calls for decisive action.
I have a friend in town who runs a shop.
She might have what you want.
Hey, Zac. Have you seen Erik?
- No. He said he was working today.
Erik's gone!
- Gone? - We were diving on the reef.
He touched a trident symbol and he disappeared.
There's a trident symbol on the reef?
That's what I discovered. The pedestal and the reef are connected.
Well, why didn't you tell me?
Erik thought we should check it out first
in case it was a false alarm.
Where is Erik? People don't just disappear.
Remember the first time you were in the chamber?
Then maybe we can bring him back.
- Like you brought me back. - Let's get out there.
Hey, how do I get into the chamber?
I need you to wait on the reef in case Erik reappears.
Come on!
I'll stay out here, you go ahead.
Be careful!
Erik!
Erik?
He's not here. - Then where is he?
Stop.
Step there and you disappear, remember?
What are you going to do?
What did you do to bring me back?
Nothing happened!
When you vanished, you reappeared in the jungle.
Maybe Erik's there, too.
Let's go see.
This is it. This is where I woke up.
Erik!
Where is he?
I'll head back to the reef, see if Cam and I can find anything.
Erik!
What if we never find him?
I'm sure we will.
This is the place. The bommie to the left.
- Okay, let's go. - Wait!
If you touch the symbol, you might disappear, too.
- I'll be careful. - You better be.
Thanks, man.
Did you see it light up?
Yeah, just like the pedestal.
Maybe that's what we're looking for.
How many other outcrops are there on your map?
Four.
Maybe it's some sort of code to get Erik back.
There's only one way to find out.
If Cam's right about this, we could have found the key to starting the chamber.
You really think starting up the chamber is a good idea?
Isn't it better to know what it does than not know?
Erik says if he and Zac can control it, they can protect us.
That's what he says.
You don't trust Erik.
- Ondina. - No!
I want to know what Mimmi thinks.
Do you trust him?
- Why do you care what I think? - You're my friend!
And that's why you've been spending so much time with me lately?
I get it. You're jealous.
This isn't about jealousy.
All along you've been saying that mermen are the enemy,
and now you're all bothered because one disappeared.
Your brother is a merman!
That is completely different.
You don't like Erik and you never have.
Come on, you two.
We should be focusing on getting Erik back.
I don't think Mimmi wants Erik back.
I didn't say that.
- See? - Well, do you?
I don't want him hurt.
Good. That's settled then.
That is not the same thing!
What do you want me to say? That I wish you had never met him?
- I don't think she wants that. - Sounds like that to me.
Think what you like.
- I will. Good.
Well, are we friends again?
- Erik?
We didn't find him.
But we did find something pretty amazing.
- We need to go back to the chamber. Is that really a good idea?
I mean, nothing good has come for us from that place.
If it'll help us find Erik, there's no question. Let's go.
What's the amazing discovery?
Okay, so there are five symbols on the reef,
just like there are five inlays on the pedestal.
How does that help us find Erik?
I think it's the activation sequence for the chamber.
Somehow the chamber made Erik disappear, so—
Activating it will bring him back.
We know which symbol goes with which point.
We just have to press them in the right order.
Right to left.
I thought it was left to right.
It's one or the other.
Wait.
What happens if you choose the wrong way?
We might all disappear. Or lose Erik forever.
You realize if you do this, there is no going back.
You will activate the chamber.
I'm not gonna do it if I don't know the order.
Do you know the order?
Mimmi, if you do, tell us, please.
If I lose Erik, I don't know what I'd do.
Just like I don't know what I'd do if I lost you.
It's simple.
Mako and the moon have always been connected.
The first symbol is the moon rising over the water, moonrise.
Then the volcano representing this island.
Next, the full moon at its height.
Then this,
I think it's meant to represent the moon pool seen from above.
And last, the trident symbol, the place we're in right now.
This is the order.
Thank you, Mimmi.
You're welcome.
Without me, you wouldn't be here.
Yeah.
Zac, do it.
Okay.
Here goes nothing.
I think it's working.
Where's Erik?
It's not working!
Wait!
Erik.
What took you so long?
I was so scared I'd never get out of there.
But mostly...
I was scared I'd never see you again.
It's nice to hear you say that.
It's true.
I care about you more than anything.
You should've told me where you were going today.
It was kind of a spur of the moment decision.
But, you're right, I should've told you.
Better still, take me with you.
You got it.
Now we know the code. Next full moon, it's all gonna happen.
Who knew a fishing app would solve the mystery of the chamber?
- Hmm. - Full credit to you, man.
I only did what anyone in my position would've done...
and shared my astonishing insight for the greater good.
So, why didn't you share them with me?
You're not gonna hold that against me, are you?
I mean, next full moon, what do you say?
Give me the tail I so richly deserve?
- Don't push it.
No harm in trying, though, right?
I like Sirena's dress.
Yeah, it's gorgeous.
Thank you for today.
I know how difficult it was for you.
And I meant what I said in the chamber.
- Did you? - Every word.
I won't let Erik get between us.
You'll always be my best friend.