I'll meet you on the roof of the high school gym.
Cut to Marty.
Marty: (w.t) On the roof, 10-4.
Marty turns the corner to meet up with Biff's gang.
3-D: Hey, it's him!
Skinhead: And he's in disguise!
Marty: Guys, what's that?
He points in the other direction, they turn and look, and he pushes past them like he did with Griff's gang in 2015. Marty runs off. The gang gets up.
3-D: Come on, let's get him!
Meanwhile the DeLorean takes off and accidentally hits the Lyon Estates billboard.
Doc: Damn!
He accidentally turns the time circuits on, and the bump causes the Destination Time to turn to JAN 01 1885 12 00. Doc doesn't notice though. The DeLorean flies off with a flag pennant attached to the rear wheel. Meanwhile Marty enters the dance. MARVIN BERRY is on the stage singing. 1955 Marty is also there, playing the guitar, and George and Lorraine are there dancing.
Music: Earth Angel by Marvin Berry & The Starlighters
Marvin: (singing) Earth Angel, Earth Angel, will you be mine? My darling, dear, love you all the time.
George waves to 1955 Marty up on the stage. 1955 Marty waves back.
Marvin: (singing) I'm just a fool, a fool in love, with you.
George and Lorraine kiss. Biff's gang enter the dance and Marty hides underneath a table, his hat falls off and he grabs it just in time.
Marvin: (o.s) Let's do another one!
Skinhead: Where'd he go? He just came in here?
1955 Marty: (o.s) Something that really cooks.
3-D spots 1955 Marty on the stage about to play Johnny B Goode.
3-D: Look. How'd he get up on stage?
Skinhead: I dunno, but when he gets down we're gonna nail him.
Match: How the hell'd he change his clothes so fast?
1955 Marty: (o.s) ...an oldie where I come from. (to Starlighters) All right guys, it's a blues riff in B, watch me for the changes, and uh, try and keep up, OK?
Music: Johnny B Goode by Marty McFly with the Starlighters
Biff's gang goes up to the side of the stage as 1955 Marty starts to play. They're there waiting for him to finish the song before they nail him. Only 1985 Marty sees them. He gets out his walkie- talkie.
Marty: (w.t) Doc!
Cut to Doc.
Marty: (v.o) Doc, come in!
Doc: (w.t) Marty, come in!
Cut to Marty. The song is still going.
Marty: (w.t) Listen Doc, Biff's guys chased me into the gym and they're gonna jump.....me!
Cut to Doc.
Doc: (w.t) Then get out of there!
Marty: (v.o) No Doc, not me, the other me, the one's that's up on stage playing Johnny B Goode!
Doc: (w.t) Great Scott! Your other self will miss the lightning bolt at the clocktower, you won't get back to the future and we'll have a major paradox!
Cut to Marty.
Marty: (w.t) Wait, wait, a paradox? You mean one of those things that could destroy the universe?
Doc: (v.o) Precisely!
Cut to Doc.
Doc: (w.t) Marty, you have to stop those guys at all costs but without being seen by your other self - or your parents!
Marty: (w.t) 10-4!
Meanwhile Biff is waking up again.
Biff: Where is he?
Wallet Guy: Who?
Biff: Calvin Klein.
Wallet Guy: Who?
Biff: The guy with the hat. Where is he?
Wallet Guy: Oh.
He points towards the gym.
Wallet Guy: He went that away.
Biff runs to the gym. The wallet guy calls after him.
Wallet Guy: I think he took your wallet!
He turns to the crowd.
Wallet Guy: I think he took his wallet.
Back in the gym, 1955 Marty is still playing.
1955 Marty: (singing) Go Johnny go, go, go; Johnny B Goode.
1985 Marty hums along for a few moments then sees Biff's gang again. They are on the side platform, with weapons, waiting for 1955 Marty to finish so they can beat him up.
1955 Marty: (singing) Go, go, go Johnny go, go; go Johnny go, go, go; go Johnny go, go; Go Johnny go, go, go; Johnny B Goode
1985 Marty spots sandbags above Biff's gang. He climbs the rigging above the stage and slowly crawls across it. We see a view of 1955 Marty playing his guitar solo with 1985 Marty, almost hidden, climbing along the top. He is unseen. Marvin makes his phonecall to his cousin Chuck. 1985 Marty tries to untie the rope holding up the sandbags.
Marty: Come on....
He manages it, and the sandbags fall on Biff's gang.
Match/Skinhead/3-D: Oomph!
They fall unconscious. 1955 Marty goes a bit overboard, and by the time he's finished playing some rock music, the dance is silent, looking at him. 1985 Marty climbs down. 1955 Marty looks at the crowd.
Strickland is covering his ears.
Marty: I guess you guys aren't ready for that yet. But your kids are gonna love it.
1985 Marty leaves the stage and gets out the walkie-talkie.
Marty: (w.t) Hey Doc, success, everything's cool.
Doc: (v.o) Great, I'll be landing on the school roof in about 1 minute.
Marty: (w.t) I'll be there.
1985 Marty exits through the door. 1955 Marty exits, but sees Lorraine before he gets to the door.
1955 Marty: Lorraine!
Lorraine: Marty, that was very interesting music.
(Note: This line was said slightly differently in Part 2 than in Part 1, as they re-shot the scene so that George was not included in the frame.) 1985 Marty watches this through the door.
