Fan Casting Back to the Future lV

The year is 2020 and his time traveling changed the future to be less futuristic. He settled down with Lorraine and had 2 kids together. His son and daughter George and Millie heard stories about their Father Time traveling and believed them but as they grew older they just chalked it up to be stories. While looking through their old belongings they find Marty’s old Hoverboard and sees that it still works. They find Marty’s old friend Dr. Brown and he reveals that Marty did Time travel. George and Millie find Brown’s old Delorean and time travel to the fifties and meet their young Father Time traveling and their young grandfather. They find an old biff there trying to change the timeline by helping his younger self and get to together with their grandmother. They help young Marty and George set George up with their Grandmother.