Step into the Great Unknown

Phineas: This is a dangerous proposition.
We're heading out on an intergalactic sibling rescue mission.
I'm gonna try my best to instill us
With some courage, 'cause we never know what might jump out and kill us.

Baljeet Wait, kill us?
Phineas: Well, yeah, I mean, we don't know.

Maybe there's monsters who spit spider webs, or breathe sulfuric acid,
Maybe there's sentient vegetation that will spew out noxious gasses,
Maybe there's a shark with the wings of an eagle and the pancreas of a lizard,
Maybe there's creatures made completely out of rock, paper and scissors.

I guess the point I'm making is we really have no clue
What the heck we're gonna see, what the heck we're gonna do.

But we're not gonna leave her on the other side of everything,
We won't leave her there alone.
We may be loaded for bear, but we have no idea what's there...
Phineas and Isabella: So let's stop, take a breath before we step into the great unknown.

Buford: Wait, wait, wait! Now I'm nervous!
Baljeet: Yeah. I am not sure that all this speculation is the best way to instill courage.

Phineas: I'll admit that my heart is racing.
There's an infinite set of variables we don't know what we're facing,
But we really need to stay on track,
'Cause we're gonna save our sister! Nothing's gonna hold us back!

Phineas and Isabella: Not even alien dust that comes alive and flies into your nose,
Or giant freaky insects who will lay eggs in everybody's clothes,
Not vampire alien overlords that really might exist,
Or, for that matter, any of these other improbable things, of which I've made a list.

Phineas: I guess the point I'm making is we really never know,
But it doesn't matter anyway. We're still gonna go.

Phineas and Isabella: 'Cause we're not gonna leave her on the other side of everything,
We won't leave her there alone.
And though we may be unaware of what is waiting over there
We'll just stop, take a breath, and step into the great unknown.

And it's best that we be wary,
'Cause this really might be scary,
We are all of us about to step into the great unknown!