2015B was an ABC timeline. It was a version of 2015 where Marty McFly took his son's place to prevent his involvement in a robbery with Griff Tannen and his gang.
On October 21, Doc Brown, Marty McFly and Jennifer Parker arrive in 2015 to save Martin McFly, Jr. from being set up for the robbery of the Hill Valley Payroll Substation by Griff Tannen. Marty poses as Marty Jr. and manages to change future history for the better by causing Griff and his gang to crash into the Hill County Courthouse, resulting in their being arrested.
That night, the 47-year-old Marty, dared by Needles, illegally lets Needles scan his card, and subsequently gets fired from his job at CusCo by Mr. Fujitsu.
Simultaneously, Biff Tannen steals the DeLorean time machine and heads back to 1955 with a sports almanac that details fifty years of sports statistics, then returns the DeLorean without either Doc or Marty noticing.
The October 22nd edition of USA Today is overwritten from the events of 2015A with the news that Griff and his gang are sentenced and sent to jail for wrecking the Courthouse Mall.
Behind the Scenes
- This timeline is the timeline that is witnessed during the events in Back to the Future Part II that take place in 2015.
- This timeline is overwritten with the events of 2015C when Biff Tannen returns in the DeLorean, leading to 1985A once Marty and Doc return to the past.