future.
I came here in a time machine
that you invented.
Now, I need your help
to get back to the year 1985.
My God!
Do you know what this means?
It means that
this damn thing doesn't work at all!
You got to help me. You are the only
one who knows how your time machine works.
Time machine?
I haven't invented any time machine.
Okay. I'll prove it to you.
Look at my driver's license. Expires 1987.
Look at my birthday.
I haven't even been born yet.
And look at this picture.
It's my brother, my sister and me.
Look at her sweatshirt, Doc.
"Class of 1984"?
Pretty mediocre photographic fakery.
They cut off your brother's hair.
I'm telling the truth.
You got to believe me.
Then tell me, future boy
who's president of the United States
in 1985?
Ronald Reagan.
Ronald Reagan? The actor?
Then who's vice president? Jerry Lewis?
I suppose Jane Wyman is the First Lady.
Wait, Doc!
And Jack Benny is treasury secretary.
Listen to me.
I've had enough jokes for one evening.
Good night, future boy!
No, wait, Doc.
The bruise on your head.
I know how that happened. You told me.
You were standing on your toilet
hanging a clock
and you fell
and hit your head on the sink.
That's when you got the idea
for the flux capacitor which
is what makes time travel possible.
There's something wrong with
the starter, so I hid it here.
After I fell off my toilet
I drew this.
The flux capacitor.
It works!
It works!
I finally invent something that works!
You bet your ass it works.
We've got to sneak this back
to my laboratory.
We've got to get you home!
This is it.
Never mind that now.
Why, that's me! Look at me!
I'm an old man!
I'm Dr. Emmett Brown.
I'm in the Twin Pines Mall parking lot.
Thank God, I've still got my hair.
What's this thing I'm wearing?
This is a radiation suit.
Radiation suit?
Of course. 'Cause of all the fallout
from the atomic wars.
This is truly amazing.
A portable television studio.
No wonder your president has to be
an actor. He has to look good on TV.
This is the part coming up.
This sucker's electrical but I need a nuclear
reaction to generate the 1.21 gigawatts
What did I just say?
this sucker's electrical,
but I need a nuclear reaction
to generate the 1.21 gigawatts of
-1.21 gigawatts!
1.21 gigawatts.
Great Scott!
What the hell is a gigawatt?
How could I have been so careless?
1.21 gigawatts!
Tom, how am I going to generate
that kind of power?
It can't be done, can it?
Doc, look.
All we need is a little plutonium.
I'm sure that in 1985 plutonium is
available in every corner drugstore
but in 1955, it's a little
hard to come by.
Marty, I'm sorry,
but I'm afraid you're stuck here.
Doc, stuck here? I can't be stuck here.
I got a life in 1985.
I got a girl.
Is she pretty?
Doc, she's beautiful.
She's crazy about me. Look at this.
Look what she wrote here.
That says it all.
Doc, you're my only hope.
Marty, I'm sorry, but the only power source
capable of generating
1.21 gigawatts of electricity
is a bolt of lightning.
What did you say?
A bolt of lightning.
Unfortunately, you never know
when or where it's ever going to strike.
We do now.
This is it!
This is the answer.
It says here that a bolt of lightning
is going to strike the clock tower
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!
All right. Saturday's good.
I can spend a week in 1955.
I can hang out. You can show me around.
That is out of the question.
You must not leave this house.
You must not see or talk to anybody.
Anything you do can have repercussions
on future events. Do you understand?
Yeah. Sure. Okay.
Marty
have you interacted with anybody else
today besides me?
Yeah, well, I might've sort of
bumped into my parents.
Great Scott! Let me see that photograph
again of your brother.
Just as I thought. This