Again, Marty and Doc control to restore the continuity, that now having said that sports minor alterations: Arthur and Silvia, Marty's grandparents, prepone their marriage to 1931 (it was 1936 in the authentic timeline), Doc Brown spends more time in 1986 and much less traveling as a result of time, Kid Tannen is now reformed, married to Edna Strickland and possessing a better affect more than Biff.