Fan CastingBack to The Future Part 4 (2021)

After breaking up with Marty after all the time travel, Jennifer want's to live a Normal Life, but Marty dosen't wan't to Although he met a New Wife, Boris break out of Jail and decides to go back in time and eliminate the person who arrested him - Marty McFly. When he does so, Marty's new son Will McFly realizes that the timeline has been changed and with Doc's help he too travels back to October 26, 1985, the day before Marty is killed. After overcoming some disbelief, Will manages to convince young Marty and others of just who he is and why he's there. With the help of Doc, a being who can see all timelines, they track Boris down. Will also learns a secret, something old Marty McFly had never told him.