...so I hid it.

Here.

Doc: After I fell off my toilet....

...I drew this.

Marty: Flux capacitor.

Doc: It works!

Ha ha ha ha!

It works!

I finally invent something that works!

Marty: Bet your ass it works.

Doc: Well, now we gotta sneak this back into my laboratory.

...we've gotta get you home!

Marty: Okay Doc, this is it.

TV Doc: Never mind that, never mind that now, never mind that, never mind...

Doc: Why that's me, look at me...

...I'm an old man!

TV Doc: Good evening, I'm Doctor Emmet Brown, I'm standing here on the parking lot of...

Doc: Thank god I still got my hair.

What on Earth is that thing I'm wearing?

Marty: Well, this is a radiation suit.

Doc: Radiation suit...

...of course, cause all of the fall out from the atomic wars.

This...

...is truly amazing...

...a portable television studio.

No wonder your president has to be an actor, he's gotta look good on television.

Marty: whoa, this is it, this is the part coming up, Doc.

TV Doc: No no no this sucker's electrical...

...but I need a nuclear reaction to generate the one point twenty-one gigawatts of electricity...

Doc: What did I just say?

TV Doc: ...this sucker's electrical...

...but I need a nuclear reaction to generate the one point twenty-one gigawatts of electricity that I need.

Doc: One point twenty-one gigawatts!

Doc: One point twenty-one gigawatts!

Great Scott!

Marty: What...

...what the hell is a gigawatt?

Doc: How could I have been so careless?

One point twenty-one gigawatts.

Tom, how am I gonna generate that kind of power, it can't be done, it can't.

Marty: Doc, look, all we need is a little plutonium.

Doc: I'm sure that in 1985, plutonium is available at every corner drug store...

...but in 1955, it's a little hard to come by.

Marty, I'm sorry, but I'm afraid you're stuck here!

Marty: Whoa, whoa Doc, stuck here, I can't be stuck here, I got a life in 1985.

I got a girl.

Doc: Is she pretty?

Marty: Doc, she's beautiful.

She's crazy about me. Look at this, look what she wrote me, Doc.

That says it all.

Doc...

...you're my only hope.

Doc: Marty, I'm sorry...

...but the only power source capable of generating one point twenty-one gigawatts of electricity is a bolt of lightning.

Marty: What did you say?

Doc: A bolt of lightning!

Unfortunately, you never know when or where it's ever gonna strike.

Marty: We do now.

Doc: This is it.

This is the answer.

It says here...

...that a bolt of lightning is gonna strike the clock tower precisely at 10:04 p.m. next Saturday night.

If we could somehow...

...harness this lightning...

...channel it...

...into the flux capacitor...

...it just might work.

Next Saturday night...

...we're sending you back to the future.

Marty: Okay, alright, Saturday is good, Saturday's good, I could spend a week in 1955.

I could hang out, you could show me around.

Doc: Marty, that's completely out of the question, you must not leave this house.

...you must not see anybody or talk to anybody.

Anything you do could have serious reprocautions on future events.

Do you understand?

Marty: Yeah, sure...

...okay.

Doc: Marty...

...you interacted with anybody else today, besides me?

Marty: Um...

...yeah well I might have sort of ran into my parents.

Doc: Great Scott!

Let me see that photograph again of your brother.

Just as I thought, this proves my theory, look at your brother.

Marty: His head's gone...

...it's like it's been erased.

Doc: Erased from existence.