Before you ask, this was the original BTTF: The Next Phase Movie that was suppose to be released in 2014, but due to a computer hard drive failure, everything stopped abruptly. Now that my computer is back working, and with the addition of GTA V for pc, production on the movie is back.
Following the original plot of the original movie (with a few minor changes), the movie is split up into 5 parts or episodes, and will take place throughout all versions of GTA.
The First Episode: Back In Time. This takes place in GTA SA, and Marty has found out that the Automatic Delorean Retrieval System has jumped back to his time, without Doc! Having found a recording, Marty sets out to rescue Doc, and he's in for the ride of his life.
BackinTime Trailer: https://www.youtube.com/watch?v=0VG_60yRwZE
The Second Episode: Different World. (Not Spoiling the Ending of the first Movie). Takes Place In both GTA SA and IV. Marty has accidentally malfunctioned the time circuits, sending him forward 25 years into 2015. Liberty City 2015. With the help of some new friends, Marty is now in for the time of his life.