Disclaimer: I do not own Back to the Future.
Author's Notes: This story is based on the conclusion that 1985 Doc in 1885 is not - and never was - the same as 1955 Doc of the Gravestone Timeline. After all, not only did 1985 Doc in 1885 not remember seeing his gravestone in 1955 - but he also never remembered dressing Marty in that odd outfit.
October 21, 20155:15 PM PST
'Why, yes, yes, of course!' Doc was saying to Marty. 'Because this hoverboard incident has now occurred, Griff now goes to jail. Therefore, your son won't go with him tonight - and that robbery will never take place. Thus history, future history, has now been altered - and this is the proof! Marty, we've succeeded - not exactly as I'd planned, but no matter. Let's go get Jennifer and go home!'
Marty put the hoverboard in the DeLorean, turned to Einie, and said, 'Hi, Einie! Hi, buddy!' Marty then picked up the almanac in its bag, but the book fell out and landed at Doc's feet.
'What's this?' Doc asked, incredulous. Then, suddenly remembering something that Marty said to him after his return to 1955, he urged, 'Quick, Marty, let's get in the car. We'll discuss this later. We have to go get Jennifer, now.'
'But what wrong with...' Marty started to ask.
'No time for that right now,' Doc interrupted. 'We have to go, quickly.'
As soon as Doc and Marty had boarded the DeLorean, Doc immediately flew off to find Jennifer.
oooooooooo
Biff opened the door of where he was hiding, and smirked, 'So that's where the almanac came from! Doc Brown must have invented a time machine! They seemed to be a real hurry to get out of here, as if they knew something was up.'
Biff then went to call for a cab, vowing that he would warn his younger self to be especially careful. Maybe he would just return the almanac to his younger self the next day, and tell him all he knows about 'Calvin Klein'.
oooooooooo
'47?' asked one of the police officers, as Doc was listening in through his futuristic binoculars. 'That's a hell of a good facelift.'
'Great Scott!' gasped Doc. 'They found her!'
'Well, we gotta stop them!' insisted Marty.
'What are we going to say,' argued Doc, 'that we're time travellers? Hey, they'd have us committed.'
'Well, we should just follow them, then,' suggested Marty.
'We can't,' replied Doc. 'We're not allowed to drive on the same skyways as the police officers. We'll have to drive to your future home on the regular skyways.'
'You mean I'm going to see where I live?' Doc asked, excitedly. 'I'm going to see myself as an old man?'
'No, no, no, Marty - that could resolve in a...' Doc then gave a groan, as he realized something. 'Great Scott! Jennifer could conceivably encounter her future self, the consequences of that could be disastrous.'
'Doc, what do you mean?' Marty asked, worriedly
'I foresee two possibilities.' explained Doc. 'One - coming face-to-face with herself thirty years older could put her into shock, and she could simply pass out. Or two - the encounter could create a time paradox, the results of which could cause a chain reaction that would unravel the very fabric of the space-time continuum and destroy the entire universe. Granted, that's the worse case scenario. The destruction might, in fact, be very localized - limited to merely our own galaxy.'
'Well, that's a relief,' Marty said, sarcastically.
'So that's why we're driving over there, now! I sure hope we find Jennifer before she finds herself!' Doc then looked at a sign which gave information on the skyway. 'The skyway's jammed, it's going to take us forever to get there. I hope we make it over there in time. I'll talk to you about the almanac as soon as we arrive in 1985.'
oooooooooo
'Here we are, now, Marty,' Doc said, as he landed the DeLorean in front of the McFly's future home. 'You wait out here while I come in to get Jennifer. I could swear that I saw Biff following us in the taxi cab. I think he found out that I created a time machine. At any rate, I need you to watch out for him - and I'll take the almanac with me.'
'Gee, Doc, this is heavy,' groaned Marty. 'How on earth did Biff find that out?'
'I'll explain everything to you, later,' Doc said, briskly. Then, turning to Einstein, he added, 'Hey, Einie, if Biff comes over here - feel free to bite him!'
Einstein licked Doc's hand, as if he understood. Marty watched, as Doc entered the home. A few minutes later, Marty saw a taxi pull up behind them - and he saw Biff walking out.
'One Seven Four Point Five Zero,' a computerized voice was saying.
'That'll be 174.50,' the taxi driver told Biff.
'Here,' replied Biff, as he put his thumbprint on the taxi driver's gadget.
'Careful, old timer,' warned the taxi driver. 'This is a rough neighbourhood.'
'Just give me the receipt,' demanded Biff, undeterred.
'Here you go,' replied the taxi driver, as he handed Biff the receipt.
'Hello? How about a tip?' chirped the parrot. When Biff refused, the parrot laughed derisively.
'All right, butthead!' snarled Biff, as he made his way over to Marty. 'Yeah, I knew who you really are, Mr. Calvin Klein. I'll see to it that you don't steal the almanac away from me, again - you little son of a bitch!'
'What the hell are you talking about, you crazy old man?' demanded Marty, confused.
'Oh, don't play dumb with me, butthead!' sneered Biff, as he began to hit Marty with his cane. 'You're the son of a bitch who pretended to be Calvin Klein in 1955, made me crash into a manure truck twice, and stole the almanac away from me. Well, this isn't going to happen again.'
As Einstein made his move to attack Biff, Marty felt very dazed. He didn't remember stealing an almanac from Biff, and he only made Biff crash into a manure truck once.
'That's what you think, you old timer,' shouted Marty, as he punched Biff in the face - causing him to fall to the ground unconscious. He then carried Biff to the garbage can and stuffed him inside.
oooooooooo
'About thirty years ago,' Lorraine was saying, 'your father tried to prove he wasn't chicken and he ended up in an automobile accident.'
'Oh, you mean with the Rolls Royce?' asked Marlene, with understanding.
'Automobile accident?' Jennifer asked, horrified.
'That accident caused a chain reaction of events which sent Marty's life straight down the tube,' Lorraine continued. 'If not for that accident, your father's life would have turned out very different. The man in the Rolls Royce wouldn't have pressed charges, Marty wouldn't have broken his hand and he wouldn't have given up on his music. And he wouldn't have spent all those years feeling sorry for himself.'
'Hey, Mom, nice pants,' said a somewhat familiar voice. Jennifer turned to see someone who looked a lot like her boyfriend.
'I think the real reason your mother married him,' added Lorraine, 'was because she felt sorry for him.
'Mom?' Jennifer asked, stunned. She figured that she must somehow be dreaming.
'Such a sweet girl,' commented Lorraine.
'Hey, Jennifer,' whispered a familiar voice.
'Oh, Doc,' gushed Jennifer, with relief, 'am I glad to see you!'
'We have to get out of here, Jennifer,' Doc whispered. 'Come follow me.'
'How did we end up here, anyway?' Jennifer asked, stunned.
'All in good time, Jennifer,' replied Doc. 'I'll explain everything to you later.'
oooooooooo
'You did it, Marty,' called out Doc, as he and Jennifer walked up to the DeLorean.
'Yeah, I knocked him out, Doc,' Marty said, with pride. 'I still don't get how he found out who I really was - and what he meant by how I stole an almanac from him back in 1955. Do you know what that's all about?'
'I'll explain everything to you,' Doc replied, 'as soon as we return to 1985.'
'Did you invent a time machine, Doc?' Jennifer asked, stunned. Then, with a hurt look on her face, she added, 'Why did you knock me out before? What was that all about?'
'Come on, both of you,' urged Doc. 'Let's get in the car. I'll explain everything to you in 1985. We'd better leave before Biff comes to.'
'Uh, yeah, right, Doc,' replied Marty, as he and Jennifer squeezed in together on the passenger seat.
After Doc inputted OCT 26 9:00 PM on the Destination Time panel, he warned, 'Marty, Jennifer, Einie - brace yourselves for temporal displacement.'
Then Doc began to pilot the DeLorean onto the skyway, until he got up to 88 miles per hour - then, just as they were about to pass a floating sign, the DeLorean broke the time barrier.