Chapter 4
Friday December 29th 2045
10:35pm

"That's right Doc, October 21st 2015." Marty said with amazement.

"Unbelieveable how Griff could have chosen that date." Doc said. "Perhaps 2015 could be the junction point for 21st century and beyond, just like 1955 was. But of course it could be an amazing coincidence."

"I honestly don't see what's so significant about 2015." Jules said.

"Before I met your mother, Marty, his girlfriend Jennifer and I went to 2015 to stop Marty's future son from going to jail." Doc said. "Let's get going! We need to fix this as soon as possible."

Doc set the destination time to Oct 21st 2015 6:30pm.

The train rose in the air, took off and accelerated to 88mph.

* * *

The steam time machine landed near the bridge. They landed on the tracks. They all got out.

"Okay Doc, what am I supposed to do?" Marty asked.

"Marty, you must go to Griff's house. The address is 1112 Wilson Rd." Doc explained. "Old Griff will show up at the door, with the DeLorean that he made. He will knock on the door, like you said, and young Griff will go with him in the DeLorean. You must not interfere with this event!"

"Why?" Clara said.

"Because it could create a paradox, or rather, a future paradox. If Griff didn't get the almanac, then Old Griff will never go back where he came from and then it would interfere with my next plan." Doc said.

"What plan?" Marty said.

"Later later." Doc said. "Once old Griff is gone, try to get the almanac any way that you can. But be careful, at 10:00am Griff will go to the Cafe 80's. From this point on, there are now two of me here and two of you here, the ones who first came to 2015. Remember the hover board incident? That doesn't happen until 10. So you have to be careful not to run into your other self. Wait here."

Doc went back into the train. After a while he came out with some jet black clothes. "Wear these over your clothes. That way, it will be hard for Griff to spot you."

Marty put on the clothes. Doc handed him a walkie-talkie.

"Keep this with you at all times. If you get the almanac, or something happens, talk to me using the walkie-talkie." Doc said. "We'll be here so I won't risk running into my other self."

"Can't I come?" Verne whined.

"Absolutely not! That man is dangerous! He's had far too many bionic overloads!" Doc said.

"All right, I'm going now." Marty said before Verne could argue back.

"Be careful." Doc warned.