It's dad's old camera.

Nice, I got it working again.

Check it out.

That's my 7th birthday.

Whoa, did you see that?

What?

I just saw something weird.

You guys, you gotta see this.

There's this footage of me at my 7th birthday.

We were all at your 7th birthday.

Yeah.

Just watch this.

Right there.

Look in the mirror.

That's me.

That is my T-shirt, that is my backpack.

This is definitely me.

It doesn't make sense.

Hear that?

Yeah.

It's in my dad's old workshop.

__________1___________.

What the hell is that?

It's some sort of a machine.

Here we go, project Almanac.

That's something my dad was working on.

Temporal relocation prototype.

What does that mean?

It means time travel.

What?

We should try to build it.

We can't build a time machine.

I mean, did you see the tape at your 7th birthday?

I mean, I think we already did build it.

You see this!

Shouldn't the next step be testing it on us?

Alright, you guys ready for this?

Yeah.

Why are we going in your house?

Watch this, watch this, that's me sleeping.

We did it.

It's yesterday.

It's yesterday!

We invented time travel.

It's like a second chance machine.

Let's take this thing out for a spin.

I just failed my chem report.

What's the classification of silicon?

Silicon, are you kidding?

And I don't wanna repeat 12th grade.

I'm gonna (Groundhog Day things这应该是不对的).

Carbon, nitrogen, oxygen.

That just happened!

I love time travel.

Check it out, Before the World Ends.

I have to win the lottery.

Welcome to Maserati.

Before the world ends?

I have to fall in love.

David, have you seen this?

None of this happened before.

__________2___________.

We have to go back and make it so that we never jumped in the first place.

We cannot do that, okay?

We have to, it's the only way.

We're just gonna undo everything.

I'm gonna go back and fix everything.

__________3__________.

Oh, my God!

Did you ever think that it was dangerous?

How do I know if this hasn't already happened before?

I just keep thinking I can go back and I can fix it myself.

David, stop!

I have to figure out how to make it go back even further.

It could kill you, David!

Happy birthday!