Fan Casting Back to the Future

Marcia McFly uses the Kia time machine to keep Dr. Emily Brown from being killed by terrorists, but instead of just about a few minutes before the shooting, it send her about 30 years back in the past of 1993 when her parents were first met, or at least they would have if Marica didn't push her teenage mom out of the way before being hit by her grandfather's car, and gotten the attention of her teenage dad. Now Marica must find a way to get her parents together as they should have and return to her time before she and her siblings fade away forever.