Marty: Ha, ha, ha, yeah!
Cut to Biff.
Biff: Manure! I hate manure!
Cut to the DeLorean. It flies to the billboard, and Marty lets go of the flag ribbon. He takes his foot off the hoverboard and speaks to Doc over the walkie-talkies. Note: the lightning storm is starting.
Marty: (w.t) Doc, is everything all right, over?
Doc: (v.o) 10-4 Marty, but it's very miserable flying weather.
Cut to Doc.
Doc: (w.t, continued) I'm going to have to turn and make a landing from this direction. I'll have to circle round and make a long approach from the south. Have you got the book?
Cut to Marty.
Marty: (w.t) In my hands Doc, I got it in my hands!
Doc: (v.o) Burn it!
Marty: (w.t) Check!
Marty kicks up the hoverboard and spots an old bucket. He puts the almanac in the bucket and takes out the matchbox he took from Biff's Pleasure Paradise. He lights a match and starts to burn the book. He then looks at the matchbox. The words are starting to change! Eventually they change from "Biff's Pleasure Paradise" to "Biff Auto Dealing". Marty then pulls out the newspaper. The headline changes from "George McFly Murdered" to "George McFly Honored".
Marty: (w.t) Doc, Doc, the newspaper changed! Now my father's alive! That means everything's back to normal, right?
Cut to Doc. He pulls out the newspaper he had. The headlines change from "Emmett Brown Committed" to "Emmett Brown Commended", "Nixon To Seek Fifth Term" to "Reagan To Seek Second Term" and "Biffco Builds New Dioxin Plant" to "Mayor Wilson Vetoes Zoning Bill".
Doc: (To himself) Mission accomplished.
Cut to Marty.
Marty: (w.t) That means Jennifer's OK and Einie's OK, right?
Cut to Doc.
Doc: (w.t) That's right Marty! It's the ripple effect, the future is back. Now let's go home!
Cut to Marty.
Marty: (w.t) Right Doc, let's get our asses back to the future...
Lightning strikes, bringing down a tree.
Marty: (w.t) Doc, Doc, are you OK?
Cut to Doc.
Doc: (w.t) That was a close one Marty, I almost bought the farm!
Cut to Marty.
Marty: (w.t) Be careful, you don't want to get struck by lightning-
But Doc does. The DeLorean is struck, causing it to spin around and accelerate until it reaches 88mph. With a flash the DeLorean disappears.
Marty: Doc? Doc? (w.t) Doc, come in Doc. Doc, do you read me? Do you read me Doc? Come in Doc!
The pennant, which had been attached to the DeLorean, lands on the floor.
Marty: Oh no!
It starts to rain.
Marty: He's gone!
In the background, a van is approaching Marty. He doesn't notice.
Marty: The Doc's gone!
Marty turns round and sees the van pulling to a halt. A man gets out.
Western Union Man: Mr McFly?
Marty turns around to see the WESTERN UNION MAN. He's wearing a hat and a trenchcoat and looks very mysterious.
Marty: Huh?
Western Union Man: Is your name Marty McFly?
Marty: Yeah?
Western Union Man: I've got something for you. A letter.
He pulls the letter out.
Marty: A letter for me? That's impossible.
Marty hides the walkie-talkie away.
Marty: Who the hell are you?
Western Union Man: Western Union. Actually a bunch of us guys at the office were kinda hoping maybe you could shed some light on the subject. You see, we've had that envelope in our possession for the past 70 years.
Marty starts opening the letter.
Western Union Man: (continued) It was given to use with the explicit instructions that it be delivered to a young man with your description....
He gets his umbrella out.
Western Union Man: (continued)...answering to the name of Marty, at this exact location, at this exact minute, November 12th 1955. We had a little bet as to whether this Marty would actually be here - looks like I lost! (laughs)
Marty: Did you say 70 years?
Western Union Man: Yeah, 70 years, 2 months and 12 days to be exact. Here, sign on line 6 please, here you are.
He gives Marty a clipboard and Marty signs on line 6. He reads the bottom of the letter - it says "'Doc' Emmett L Brown, September 1st 1885"
Marty: It's from the Doc! (reading) "Dear Marty, if my calculations are correct you will receive this letter immediately after you saw the DeLorean struck by lightning. First let me assure you that I am alive and well. I've been living happily these past eight months in the year 1885. The lightning bolt-" 1885?! (at bottom of letter) "September 1885!" Argh!
Western Union Man: No wait kid, wait a minute, what's this all about?
Marty: He's alive! The Doc's alive! He's in the old west but he's alive!
Western Union Man: Tell me kid, are you all right? Do you need any help?
Marty: There's only one man who can help me.
Cut to 1955 Doc at the clocktower. He's on it holding the cables. He watches the DeLorean from the first movie, with 1955 Marty inside, approach the clocktower. Doc finishes connecting everything and then slides down the rope.
Doc: Argh!
The DeLorean hits 88mph and lets off blue flashes - it's about ready to travel through time. Cut to Doc. Doc gets the cable out of the branch. Lightning strikes it, and the lightning causes electricity to go down the cables, which Doc reconnects just in time, getting himself a slight electric shock as he does so.
Doc: Ahh!
The lightning enters the flux capacitor. 1955 Marty gets sent back to 1985. Doc dances with delight because the experiment was successful.
Doc: Yoo! It works! Ha, ha, ha!
And then he turns to the Courthouse. After looking at it, he turns to his car - and 1985 Marty (the one we've been following through this film) comes running up to him.
Marty: Doc! Doc! Doc!