[Audio clicks on. Footsteps are audible]

Agent Nebula to headquarters. Agent Insomnia and I have successfully entered the tunnels. Report: It's hella dark in here. No signs of danger as of just yet. We—

[Nikolas interrupts]

What are you doing, Jo-Jo? Also, Agent Insomnia, really?

[Jordyn laughs]

C'mon, Niki, play along. And yes, Agent Insomnia. Unless you can think of something better.

[The sound of Nikolas grumbling under his breath can be heard. Then he speaks up]

Fine, Insomnia works.

[Jordyn]

Good. Anyway—

We are now heading deeper into the cavern system. It's only getting darker from here, but our super-secret-agent-tech flashlights illuminate enough to tell us...These tunnels aren't very big. They're only wide enough for four or so people to walk abreast, and if a little kid were to sit on Niki's shoulders it would probably hit its head. It's a good thing neither of us are very tall.

I don't think tunnels this small can cause such big cave-ins.

Can they?

[Nikolas]

It's not likely. That's probably why they're still standing. The bigger parts of the tunnels were what fell, I assume.

[The footsteps stop abruptly. Jordyn speaks next]

Bigger tunnels like that?

[Nikolas]

Exactly like that. Whoa.

[Jordyn]

It's huge. And so....empty.

HELLO???

[Jordyn's voice echoes and then fades out. In the silence that follows, the audio picks up a faint noise, like a growl, but neither of the two acknowledge it. Their footsteps start up again]

Look, Niki, there's a staircase down this way! I mean—Agent Insomnia. I've located a path leading deeper into our investigative area.

[Nikolas]

We should have brought spray paint. That rock wall there is practically begging to be graffiti'd.

[Jordyn gasps]

You're so right.

Next time we'll definitely bring spray paint.

[The footsteps continue. Nikolas' voice is the next to be heard, slightly distantly]

Hey, Jo-Jo, come look at this.

[Jordyn walks closer]

What is it?

[Nikolas]

There's a whole apartment complex system in here. They really were trying to build an underground city...

[Jordyn]

Whoa... This place is enormous.

Imagine living down here. No sky, no sun, just...rock. I think I'd hate it.

[Nikolas]

I think I could do it.

[Jordyn]

Really?

...What's the inside look like?

[More footsteps]

It's pretty spacious, eh, Niki?

[Nikolas]

Yeah, it is.

[Jordyn]

At least the living accommodations are nice, if nothing else. I—

[She stops abruptly as something dings]

Was that your comm?

[There's a short pause before Nikolas replies]

...Yeah. It's Gramps; he's wondering where we are.

[Jordyn's voice sounds mildly surprised]

Oh! I mean, we'd better get back home then.

[End of audio]