2015F was an ABC timeline. It was a version of 2015 created when Dr. Emmett Brown went back in time in the second DeLorean time machine in order to stop a nuclear holocaust in 2045.


The hydrator, Nike MAG, hoverboard, hover conversions, and Mr. Fusion were not available by this year. As the Mr. Fusion, hover conversion, and hoverboard never existed in this timeline, it's unknown how the events that led to Doc travelling to 1885 to meet and fall in love with Clara Clayton occurred in this timeline, since those inventions were pivotal to Marty McFly and Doc's survival.