The episode begins with Tux and Sparrow enjoying their newly decorated library. Tux is flipping through an old book while Sparrow plays with a feather nearby.
TUX (reading aloud) "Legends of the Lost City... Sounds intriguing."
SPARROW (curious) What's it about, Tux?
TUX (thoughtfully) It's said to be a city of riches hidden deep within the city's forgotten tunnels. Some say it's just a myth, but others believe there's truth to the stories.
SPARROW (fascinated) Do you think it's real?
TUX (skeptical) Who knows? But there's more to this city than meets the eye.
FLASHBACK:
In a brief flashback, we see Tux's parents in their human's home, just before the tragic fire.
TUX'S MOM (sadly) "You think you're so special. Do you know what I lost in a fire!?"
BACK TO PRESENT:
SPARROW (softly) Tux, what happened to your family?
TUX (gently) I... I lost them in a fire when I was just a kitten. It's why I'm always on edge, Sparrow. This city took everything from me.
Sparrow reaches out and nuzzles Tux comfortingly.
SPARROW (supportive) You're not alone anymore, Tux. We'll face whatever comes together.
A DISTANT RUMBLING
The ground shakes slightly, catching their attention.
TUX (warily) What was that?
SPARROW (nervous) I-I don't know, but it sounded close.
TUX (determined) Let's find out. Stay close, Sparrow.