The building's gone. We're here for the long term.
We may still have a way home.
Moore built another portal.
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 okay? - Look.
This is what I saw.
Eve!
Gavin... no.
Should we pull him off this rock?
No... we do that, he bleeds out.
We gotta staunch the bleeding.
Why did you do that? Push me out of the way of that thing.
Couldn't let you down so close to the end.
Quiet, quiet. You guys hear that?
I think there's something out there.
Is it another lizard?
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.
I got it. We're good.
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.
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... 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.
Amazing.
Get it started.
This portal will take you back four hours.
You should arrive relatively close to this location.
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.
- Okay. - Once this is done
we have to send the others back to our time.
No, that won't be possible.
No one else is leaving. Not while the portal's open.
Excuse me?
This machine can only go to one place at a time.
If you redirect this portal once they go through
Eve and Izzy will have no way to get back.
I have to go.
We gotta think about everyone. I have a responsibility to Riley.
Your daughter is not dying.
Not now, but in five minutes, it could be a whole 'nother 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.
All set.
- Look after your dad, okay? - I will.
Let's do this.
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...
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 that campsite and warn Dad?
I think so. Yeah.
Let's go.
Add some lidocaine before you put that gauze back on his wound.
We've 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 are getting divorced.
You know this the whole time, and 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?
I don't know.
It's just something we'd have to figure out.
That doesn't sound good.
Josh, what's that noise?
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.
I've never seen a wild horse before.
And you still haven't.
That one's domesticated.
What?
He's got shoes on.
And it'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.
But they hated me.
Got pretty good with a rope though.
Just could never wrangle them.
They know, right?
Animals.
If people are good.
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.
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... but here, I'm different.
Okay? I work here. We work here.
I... I don't want that to change.
We have to go back home.
- No, we don't. - Yes, we do.
Lucas...
I'm pregnant.
Is that all you wanna say?
No, I mean...
I just...
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...
That makes sense.
We should catch up with the others.
Yeah, let's do that.
Let's get some water.
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?
James! Stop!
Please, James.
Ty...
You all right? Here, let me help you.
I'm okay. It must've just grazed me.
Here. Wrap this around.
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.
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.
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, but...
Is that your...
Petra, you can tell me.
Mutti.
Mother?
She's your mom.
Okay, where is she? Is she here?
Wo ist sie?
This is freaking bananas.
I mean, this can't just be a coincidence, can it?
God, 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?
Petra.
Bist du okay?
Is it asthma?
Do you need an inhaler?
One of these?
That inhaler at the campsite was yours.
Okay, 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?
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.
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's 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, Iz.
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 there's only a few hours until the machine breaks down.
If that aurora goes out, Mom and Iz 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. - I don't know. Maybe not.
He told me the problem's with the cooling system.
There's not enough water flowing in 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.
Veronica.
Mom, look.
Is that the aurora you came through?
Yeah. But it was bigger.
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.
Your dad's gonna be okay.
Your mom will come through.
I wanted to talk to you.
I'm sorry.
Me, too.
I got scared.
So, I shut down.
I thought I could stop caring about you, but I can't.
Josh.
Your dad needs you.
Dad. Hey, Dad.
Dad.
Hey.
You're gonna be fine.
No, I'm not.
Hey, I want you to know that I love you.
I love you so much.
I love you, too.
I'm proud of you.
You tell your mom and your sister that I love them, too.
Yeah. 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.
Hey, hey. Dad.
Dad.
You don't wanna look at that.
Let me get that inhaler.
Here.
Danke.
Listen, I just have a million questions about you
and about who your mother is
and all I've got are about 50-ish words
of some pretty bad German, but let's start again, okay?
Where are you from?
Wo ist zu hause?
Where is...
Wo ist das?
Hier.
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?
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.
If you help me find my mother, I'll tell you everything I know.
Here's our problem.
The fallen tree must be blocking the water
that's supposed to cool the machine.
We need to get this tree away now.
Okay.
Okay, let's go.
Okay.
Damnit.
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.
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.
Nah, hey, honestly, Sam, I kind of 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.
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, okay?
Oh, no...
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 is 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?
'Cause 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.
What is that?
I think it's the lizard.
Look, no one can stay here right now, okay?
- 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.
Come on!
We're never gonna move that thing.
Now that frickin' machine's gonna explode
and we're all gonna be stuck here.
- No. - Where's the portal?
I don't know. It was right here.
We've lost our chance.
It's not working.
Come on, come on! Just keep going, keep going!
On the count of three, one, two, three!
Lucas?
What're you doing, Old Spice?
Get away!
Move. Let's go.
Come on, boy.
Come on!
Oh, yeah, oh yeah!
Hell yeah! We did it!
Hey, good work, boy.
We did it!
We're outta here!
You did it.
I thought you said horses hated you.
Sometimes, people can change.
Let's just hope it worked.
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 okay? - Yeah.
Mom! Iz!
- Josh. Josh, yeah. - You're okay.
Your dad, is he...
Hey.
I got your message.
Hi.
Hey.
Looks to me like the machine is 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.
Okay. 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 now.
Sam also said maybe you would want this, just in case.
Yeah.
So, I... I found something on the ground.
- 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.
Listen, there's one more decision we have to make when we get back.
Are we gonna have pizza or Chinese for dinner?
This is why I love you.
Hey, I'm gonna put this back on you.
Sabertooths, sinkholes, all of it
I wouldn't trade any of it
because it brought us back together.
Look at what we've been through.
I'm gonna give you a minute.
- Yeah, yeah. Okay. - Yeah?
- Thanks. - Okay.
Let's meet up with everyone outside.
Your dad's right behind us.
So, it's great news. We're goin' home.
We'll go back to the clearing and let everyone know.
Listen, I've been doing some... some thinking, and...
I think I got a name.
- A name? - Yeah.
You mean... you mean, a name?
A name, yeah.
Let me guess.
Lucas, Jr.?
I mean if it's a boy. Yeah.
- Of course. - Yeah, of course.
Right?
But, I mean, if it's a girl...
You know, I've always really liked the name "Ella."
Crazy day.
Catherine, right?
A lot on your mind?
Excited to go home.
But now I 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?
It's my number.
I actually don't know if it will still work, but...
if it does, you can call me anytime.
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've been no room for that.
I set my sights too narrow.
I've been trying to help save the world
when I should've been trying to control it.
That's the only way to affect 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.
James!
Tell your sister...
I'm sorry I failed.
What are you talking about?
What sister?
Why did you never tell me before?
Believe me, when she comes for you...
you'll know why.
We gotta get to your dad.
What?
This is crazy.
What's going on?
Those auroras are doorways to different times.
Anything could be coming out of them right now.
- Oh, my god. - Gavin.
Gavin!
- Are you hurt? What's happening? - No, I... I'm all right.
Oh, my god, what happened?
I... I didn't have a choice.
What was that?
We should go home before it's too late.
Hold on.
It might already be too late.
What do you mean?
Look at these dates.
They're all over the place.
Who knows where the portal's gonna send us.
How are we gonna get home?
I don't know, but we gotta get outta here.
Go.
Right.
Dad. Dad, we need to go.
Come on, go.
Mom.
Wait...
We... we need Moore's journal if we're gonna fix the machine!
Yeah, I'll get it.
- Eve! - Wait! Wait!
No...
- Can you open it? - No, we can't!
Open the door!
- Move! - Okay.
What's happening?
- It's gonna pull Mom in. - Here. Take this and go.
- 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!
- We'll not leave without you. - Eve! No, Eve!
- Mom, hold on! - Eve, no! Eve!
Eve!
Dad...
Dad, she's gone.
So, what do we do now?
We can't use the portal.
We've no way to get Mom.
We find the others, we get to the clearing
and then we make a plan.
What was that?
Another lizard?
I don't know of a lizard that big.
- What could've made that? - I have no idea.
All those auroras opened up from different times.
Who knows what's down here.
Is that a T-Rex?
Run!