Intro
The music for the intro is a recreated version of "Back in Time", originally by Huey Lewis and the News (who also recorded "The Power of Love" for the first film). The intro begins with Doc Brown surprised when seeing the time on his watch, before he enters the DeLorean. As he drives away, he heads to May 19, 2015 where he grabs Marty McFly, to June 10, 1885 to collect Clara, and to prehistoric times to collect Jules and Verne, before returning to 1991 (they escape from Griff Tannen, Buford "Mad Dog" Tannen and a Biff-like dinosaur respectively). The following scene depicts the group sit down to dinner, before noticing Einstein is missing. They subsequently find him driving the steam train time machine to an unknown time. For the second season, the intro replaces the collection of the main characters with clips of the first season, and ends with the same sequence from season one's intro.
Read more about this topic: Back To The Future (TV series)