[tense music]
The building's gone.
We're here for the long term.
We may still have a way home.
Moore built another portal.
The truth is, the closer we get to going home,
the more I'm not sure it's what I want.
I need to tell you something.
But maybe now's not a good time.
I don't know how to be a mom.
The first thing about being a mom
is knowing if you are one.
Why haven't you made up with Riley yet?
You need to fix things now.
Were you and Mom getting divorced?
Dad, why didn't you say anything?
Now's not the time.
To get to Moore's portal, we have to go through there.
What about Gavin's vision?
I'm not letting my family walk into danger.
I'm going. You guys OK?
Look.
This is what I saw.
[grunts]
[growls, hisses]
Gavin, no.
♪
Should we pull him off this rock?
No, no, no. We do that, he bleeds out.
We've gotta staunch the bleeding.
[groans]
Why did you do that--
push me out of the way of that thing?
Couldn't let you down so close to the end.
[rocks clattering]
Quiet, quiet, quiet. You guys hear that?
I think there's something out there.
Is it another lizard?
[dark music]
♪
[rocks clattering]
[cocks gun]
James?
You're alive.
What do you want?
To use that portal.
We are going there now.
That's not gonna happen.
Do not test me.
- [grunts] - Ah! [groans]
[grunting] - I got it, I got it.
[groans]
What are you gonna do, kill me?
No.
You're gonna get us home.
Having James is a blessing in disguise.
I don't know about you,
but I don't know much about how to operate a portal.
[groans softly]
How long do we have after we take him off this thing?
Minutes, maybe.
Don't worry about helping me.
You gotta get the kids out of here.
Maybe we can do both.
What do you mean?
If we can use the machine to get to the future,
why can't we use it to get to the past?
I can go back, I can warn you,
and none of this will have happened.
No, no, no. You gotta-- You have the chance
to get the kids home, you've gotta take it.
I can do this.
I can.
At least let me try.
[hissing]
[lights clanking on]
Amazing.
Get it started.
This portal will take you back four hours.
You should arrive relatively close to this location.
[machine whirring] - Should?
Time travel is an imperfect science.
I got this.
No, Mom, we are in this together.
Josh can stay here with Dad and take care of him.
I'm coming with you.
- OK. - Once this is done,
we have to send the others back to our time.
Oh, that won't be possible.
No one else is leaving. Not while the portal's open.
Excuse me? [machine whirring]
This machine can only go to one place at a time.
If you redirect the portal once they go through,
Eve and Izzy will have no way to get back.
I have to go.
We've gotta think about everyone.
I have a responsibility to Riley.
- Your daughter's not dying. - Not now,
but in five minutes, it could be a whole other story.
Sam, I'll be back as soon as I can.
I can't let you do this, Eve.
Dad.
Let them go.
Please.
Thank you.
Here we go.
[portal humming]
All set.
Look after your dad, OK?
I will.
[labored breathing]
Let's do this.
[thrilling music]
♪
[dramatic music]
♪
[eerie music]
♪
It worked.
I have no idea where we are.
How are we gonna find Dad?
I don't know.
Do you see that cloud?
Yeah.
Looks like a mountain range, right?
- Yeah. - Yeah.
I remember seeing it from this angle.
It was a few miles before the campsite
where we saw the bodies.
So we can get back to the campsite and warn Dad.
I think so, yeah.
Let's go.
[breathing heavily]
Add some lidocaine before you put that gauze
back on his wound.
We gotta keep him as comfortable as we can.
Dad, can we please talk about it?
There's nothing to talk about.
I get why you backed Eve.
All we can do is move forward.
That's not what I meant.
You and Mom were getting divorced.
You knew this the whole time. You didn't say anything.
Why?
'Cause you're my kid.
You don't need to know about that.
We are in this together.
At least, I thought we were.
When the building went down, I took
a hard look at everything,
about the things I was fighting to go home to.
But I had to be honest with myself.
I thought I could fix what went wrong with me and your mom,
but I realized I was kidding myself.
But if you're not with Mom...
what happens to our family? - Oh.
I don't know.
That's just something we're gonna have to figure out.
[explosion booms]
That doesn't sound good.
[whirring]
Josh, what's that noise?
[crackling]
It's the machine. Something's wrong.
James, do you know what that is?
I do. And I promise you,
it does not bode well for anyone.
Just tell us what's going on.
Of course.
But I need something in return.
I wanna talk to my son.
[light music]
♪
[horse whinnying]
I've never seen a wild horse before.
You still haven't.
That one's domesticated.
What?
Yeah, he's got shoes on.
And he's got a look about him.
Since when do you know about horses?
When I was a kid,
my folks sent me away to my cousin's farm,
so I got to know horses.
They hated me.
You get pretty good with a rope, though.
I just could never wrangle them.
They know, right?
Animals--
if people are good.
[horse whinnying]
See what I mean?
Hey, I was thinking about what you said
about going back home.
And I get why you're scared.
Well, I've been thinking, too.
Oh?
I think I should stay here.
I think we should stay here.
I think that's a terrible idea.
Veronica, all I have back home
is a big pile of mistakes.
I mean, I got a criminal record.
I got nothing to offer you there.
But here, I'm different, OK?
I work here. We work here.
I don't want that to change.
We have to go back home.
No, we don't.
Yes, we do.
Lucas...
I'm pregnant.
Oh.
"Oh?"
Is that all you wanna say?
No. I mean--
I just, uh--
I'm sure you're gonna think of something
much more comforting to say.
But in the meantime, we need to get to that portal.
Yeah, right. No, I mean-- That makes sense.
We should catch up with the others.
Yeah, let's do that.
[sighs]
Let's get some water.
[gunshot]
That was a gunshot.
Get down.
What the hell is going on?
That's how James gets the fuel rods.
Get on your knees.
You don't have to do this.
We have to help them.
- What about Dad? - If we don't act now,
they're both gonna die.
James, listen,
when I met you, you were a man trying to change.
A man burdened by his choices.
But I still believe you can make new ones.
Please, just let me help you.
It's too late for that.
So what happens now? Ah!
James, stop!
[grunting]
Please, James! [gunshot]
[groaning]
[intense music]
♪
Ty.
You all right? Let me help you.
Ow. I'm OK, I'm OK.
It must have just grazed me.
Here. Let's wrap it up.
Mom, we have to go warn Dad.
What do you mean?
This is gonna be a lot for you to process.
♪
This is probably the last candy bar in 10,000 BC.
[sighs] Here.
Listen, I need to talk to you about something.
I've been trying to open this damn thing, and I can't.
It has some kind of locking mechanism.
And I was hoping, because I found it next to your teddy,
maybe you might--
[lock clicks]
Petra! Nice work!
Wait.
I know that woman.
That's Maya Schmidt.
I was supposed to have a job interview with her,
the day the sinkhole opened up.
Is that your--
Petra, you can tell me.
Mutter.
Mother?
She's your mom?
OK. Uh, where is she?
Is she here?
[speaking German]
This is freaking bananas.
I mean, this can't just be a coincidence, can it?
Gosh, I wish it was easier to talk to her.
I used to be so good at German.
How do I help her? What do I say?
[wheezing, coughing]
Petra?
[speaking German]
Is it asthma?
Do you need an inhaler?
Uh, one of these?
That inhaler at the campsite was yours.
OK. We need to get it.
Come on. Let's go find it.
I need you to tell me exactly what's wrong with the portal.
No pleasantries.
No time for poignancy.
No, I just need you to tell me how to fix the machine.
I understand.
The cooling system's malfunctioning.
Those pipes inside the room-- you'll notice there's
no running water going through them.
That's why the device is overheating.
And my guess, we only have a few hours
before it fails completely and traps all of us here.
I need you to fix it.
Why would I want to do that?
[clears throat]
When we met at Lazarus,
you said to me
you wanted to make amends for your mistakes,
that you'd grown as a person,
and you wanted a second chance.
This is it.
I need my father.
My fate, and the fate of my family, rests in your hands.
If you want me to fix the portal,
I need these restraints removed
and guaranteed access to the machine.
So you can do what?
So I can go back to where I'm from
and restart the Lazarus Project.
And unless those demands are met, I do nothing.
Even now, all you care about is your own agenda.
I'm your son,
and I'm dying in front of you.
Doesn't that mean anything to you?
I lost my son years ago.
If you want my help, you have my terms.
This is it.
I know you looked at me like I was crazy
when I said I wanted to stay here.
Because it is crazy.
Maybe. But parents raised kids in 10,000 BC,
and way before then.
People adapt to the conditions that they're in.
This isn't some off-the-grid farm.
I know you're scared of going back to the guy you were,
but you turned your life around.
You have strength. That doesn't just go away.
I'm, like, a week into walking a new path.
I could get lost tomorrow.
But you won't,
because we have each other.
Or I drag you down with me
and worse, an innocent little kid.
I will get you home.
But I'm staying here.
Are you sure we're going the right way?
I feel like we've come this way before.
There's a shortcut up this way
through a mountain pass.
Paara has been teaching me the land.
I promise, we'll have you with Gavin in no time.
I appreciate you letting me come with you.
Despite everything, I still care about you, Levi.
When we get home, I just want us all to start over.
Starting over isn't so simple for me, Izz.
Why not?
There are things that I was involved in
that I can't run away from.
To get back down here, I had to cross
some powerful people.
Which people, Levi?
Let's just try to stay focused
on what's in front of us.
James said it's only a few hours
until the machine breaks down.
If that aurora goes out, Mom and Izz
will never get back to us.
We'll be stuck down here forever.
James might be a maniac,
but he's the only one who knows how to fix this machine.
We need him. - Nah, maybe not.
He told me the problem is with the cooling system.
There's not enough water flowing into the machine.
So maybe there's something wrong with the water source.
There's a maze of tunnels down here.
How are we gonna find that?
Hold on, hold on.
I think I saw a spring outside the cave.
Sounds like a water source to me.
- Judah, go check it out. - Yeah, yeah. I'm on it.
And take them, too.
Guys, we got an important job.
I need you both. Come on.
Let's go.
You should stay. I'll go with Judah.
Wha-- Veronica--
Mom, look!
Is that the aurora you came through?
Yeah. But it was bigger.
God, if this thing closes, how are we gonna get back?
You two should go now.
This might be your only chance to get home.
No.
I'm not abandoning Gavin.
We're gonna finish what we started.
[portal flickering]
[breathing shakily]
[crying]
Your dad's gonna be OK.
Your mom will come through.
I've wanted to talk to you.
I'm sorry.
Me too.
I got scared, and so I shut down.
I thought I could stop caring about you, but I can't.
[sentimental music]
♪
Josh.
Your dad needs you.
♪
[labored breathing]
Dad.
Hey, Dad.
Dad. Hey.
Hey.
You're gonna be fine.
No, I'm not.
[sobs]
Hey.
I want you to know that I love you.
I love you so much.
I love you, too.
I'm proud of you.
And tell your mom and your sister I love them, too.
No. Just hold on.
Hey, it's time.
You gotta be strong.
Despite everything, I feel like
the luckiest man in the world, 'cause--
'cause you're my son.
I'm so lucky to have you guys as my family.
No.
[exhales]
Hey, hey, hey, Dad.
Dad. - [exhaling]
[sobbing]
[coughing, wheezing]
Uh, you don't wanna look at that.
Let me get that inhaler.
Here.
[inhales]
[breathes deeply]
Danke.
Listen, I just have a million questions about you,
and about who your mother is,
and all I've got are about fifty-ish words
of some pretty bad German.
But let's start again, OK?
Where are you from?
[speaking German]
Uh, where is--
[speaking German]
- Here. - Here?
No, as in--
You mean in this place?
How did a military barracks get to 10,000 BC?
Wait. Did you--
You totally understood what I said, didn't you?
Are you serious?
You speak English, Petra?
[chuckles]
Look, I know that you're scared.
But I hope by now that you can see I'm a good person,
and you can trust me.
Please tell me who your mother is.
[dramatic music]
♪
If you help me find my mother,
I'll tell you everything I know.
♪
Here's your problem.
That fallen tree must be blocking the water that's
supposed to cool the machine.
We need to get this tree away now.
OK. All right.
Now, let's go.
[both grunting]
Damn it!
Hey. How come you're not with Judah and Veronica?
What are you doing here?
Thinking.
Not exactly the best time for that.
Gavin...
he's gone.
I'm sorry, man.
But still, everything can change
as long as Eve and Izzy finish what they set out to do.
But we have to keep that portal open, so they can get back.
I need you to help me figure out why water's
not flowing to that machine. - No, hey, hey.
Honestly, Sam, I kinda ruin everything I touch.
So maybe it's best I don't go anywhere near the thing
that might get everyone home.
What's with the woe is me?
Veronica's pregnant.
Huh.
And since you had a dad that messed you up,
you think you'll do the same to your kid.
So why bother?
Better to not try, so no one gets hurt.
I don't need this from you, OK?
Ohh.
I may be the only guy you do need this from.
Because you and me, our dads both did a number on us.
But sometimes, the apple does fall far from the tree.
I'm not perfect, but one thing I know--
I'm a good dad.
You think about yourself a certain way, right?
And it's hard to break out from that.
But the thing is, change is possible--
if you let it.
But not if you're here alone in a cave.
Listen to me.
Let's go help Veronica.
I think we beat Gavin here.
How can you be sure?
Because the map is still here.
So we'll just wait for him.
Not with that aurora shrinking.
I'll stay. I'll wait for him.
- Levi. - I owe you this much.
[roaring]
What is that?
I think it's the lizard.
Look, no one can stay here right now, OK?
We all have to go. - All right. What do we do?
Leave him a note. Warn him that way.
Good idea.
Can we be certain he'll find it?
Yeah.
Yeah, we can.
Because we'll leave it on the map.
It's gonna work.
Let's get back to the aurora.
[straining efforts]
Come on! Uhh!
Come on! - Ah!
We're never gonna move that thing.
Now that freakin' machine's gonna explode,
and we're all gonna be stuck here.
[machinery clanking]
[alarm blaring]
No!
Where's the portal?
I don't know. It was right here.
- We've lost our chance. - Oh.
[straining efforts]
It's not working.
Come on, come on! Just keep going.
Keep going. On the count of three.
1, 2, 3!
[both grunting]
Oh, oh! [horse whinnying]
Lucas?
What are you doing, Old Spice?
Get away.
Let's go. Yah! [horse whinnying]
Come on, boy.
Come on!
[horse whinnying]
[cheering] - Hell yeah!
We did it! - Hey! Good work, boy.
We did it! Yahoo!
We're outta here!
You did it.
I thought you said horses hated you.
Sometimes people can change.
Let's just hope it works.
[dramatic music]
♪
[beeping]
[machine humming]
I don't know what just happened,
but I'm really glad it did.
Let's go.
Wait.
I'm coming with you.
I have to see this through.
I'm not leaving you, either.
So. We ready, then?
Let's do this.
You OK? - Uh, yeah.
Mom!
Izz!
- Josh! Josh! - You OK?
Yeah.
Your dad.
Is he--
Hey.
I got your message.
[both laugh]
♪
[laughter]
Looks to me like the machine's working again.
So what do you say we all go home?
Hey, handsome.
Hey, yourself.
Everyone's outside.
We're gonna go get Scott from the campsite.
OK. And James?
He's tied up in the cave.
Sam thinks we should give him to Paara,
so Ty's on his way to talk to her about that right now.
Um, Sam also said maybe you would want this, just in case.
Yeah.
[clears throat] Um--
So I--I found something on the ground.
[chuckles] - Oh, my God.
I think you may have dropped this.
Yeah, I can't--I can't quite get rid of that, can I?
- No. - No.
Um, listen, there's one more decision
we have to make when we get back.
[sighs]
Are we gonna have pizza or Chinese for dinner?
Mm-hmm.
[both laugh]
This is why I love you.
Hey.
I'm gonna put this back on you.
Sabretooths, sinkholes, all of it.
I wouldn't trade any of it,
'cause it brought us back together.
Look at what we've been through.
I'm gonna give you a minute.
- Yeah. OK. - Yeah?
- OK, thanks. - OK.
Let's meet up with everyone outside.
Your dad's right behind us.
[ominous music]
♪
[ropes straining]
So it's great news. We're going home.
We'll go back to the clearing and let everyone know.
[sighs]
Listen, I've been doing some, uh--
some thinking.
And, uh, I think I got a name.
- A name? - Yeah.
- You mean a name-- - A name, yeah.
Let me guess.
Lucas Junior. - I mean, if it's a boy, yeah.
Of course. - Yeah, of course.
- Right? - Mm-hmm.
But I mean, if it's a girl, uh--
you know, I've always really liked the name Ella.
♪
Crazy day.
Katherine, right?
A lot on your mind?
Excited to go home.
But now I've gotta figure out what's next.
Me too.
Listen, I just had to say thank you,
for getting us through all this.
If there's ever anything I can do for you--
What's this?
[chuckles] It's my number.
I actually don't know if it'll still work,
but if it does,
you can call me anytime.
♪
[mysterious music]
♪
[exhales]
[sighs]
[grunts]
[dramatic music]
Where are you planning to go?
You're going ahead with Blue Moon, aren't you?
Far from it.
You know, I thought that family, our relationship,
is the key to everything.
And I see now it is the reason for my failure.
Love creates weakness.
Gavin, I let my personal feelings compromise my work,
when there should have been no room for that.
I set my sights too narrow.
I've been trying to help save the world,
when I should have been trying to control it.
That's the only way to effect change.
And now I am going to remove anyone, and anything,
that stands in my way.
Does that include my mother?
Commitment requires sacrifice.
You know what happens to me, and to my family,
if you go through with this.
We'll cease to exist.
You have Moore's journal.
Give it to me.
[both grunting]
[gunshot] [hissing]
Ah!
[struggling efforts]
[gunshot] [glass shatters]
[gunshot] [machine whirring]
[both panting]
♪
James!
[gunshots]
[groaning]
Ah.
Tell your sister,
I'm sorry I failed.
What are you talking about?
What sister? - [groans]
Why did you never tell me before?
Believe me, when she comes for you,
you'll know why.
[dramatic music]
♪
[alarm blaring]
[rumbling]
Something's wrong.
We've gotta get to your dad.
[rumbling]
What is--whoa.
Oh, man.
[fluttering, rumbling]
This is crazy.
What's going on?
Those auroras are doorways to different times.
Anything could be coming out of them right now.
♪
[rumbling]
Oh, my God.
Gavin. Gavin!
Are you hurt? What's happening?
No, I'm all right.
Oh, my God. What happened?
I didn't have a choice.
[loud rumbling]
What was that?
We should go home before it's too late.
[booming]
[machinery whirring]
Hold on.
It might already be too late.
What do you mean? [booming]
Look at these dates.
They're all over the place.
Who knows where the portal is gonna send us?
How are we gonna get home? [booming]
I don't know, but we've gotta get out of here.
Go. - All right.
[beeping]
Dad, Dad, we need to go.
Come on, go!
Mom.
Whoa, whoa, wait up.
We need Moore's journal if we're gonna fix the machine.
Yeah, I'll get it. [alarm blaring]
[beeping]
- Eve! - Wait, wait!
No!
No, no, no, no, no!
[portal whirring]
- Can you open it? - No, we can't.
Open the door!
Move, move!
[glass shattering]
What's happening?
It's gonna pull Mom in!
Here, take this and go.
No, no, no, no! We're not leaving!
We're not gonna let you die!
I'm not gonna die.
We found each other once, we can do it again.
- Mom, Mom, no! I love you! - Mom, no!
- Eve! - Mom! Mom!
- Mom! - Eve!
[dramatic music]
Eve!
♪
Eve!
[hissing]
[somber music]
♪
Dad, she's gone.
So what do we do now?
We can't use the portal.
We have no way to get to Mom.
We find the others, we get to the clearing,
then we make a plan.
[booming]
What was that?
Another lizard?
[booming]
I don't know of a lizard that big.
What could have made that?
I have no idea.
All those auroras opened up from different times.
Who knows what's down here?
[heavy thudding]
[dramatic music]
[snarling]
Is that a T-Rex?
[roaring]
Run!
[dramatic music]
♪