It is the continuation of a fun first movie, and keeps up the creativity and novelty. I think that was the reason most responsible for its success: the ability to keep offering something new. Doc Brown comes back from the future to help Marty get his kid out of trouble. Instead of leaving well enough alone, all three of them head off to the future to try and change events. They managed to pull it off but unfortunately they tore a fabric in time due to Marty being greedy and the nosy efforts of Doc Brown. Most of the original players return to reprise their original roles. The whole cast did a good job.
Back to the Future Part II (1989)
PG | 1h 48min
Synopsis: After visiting 2015, Marty McFly must repeat his visit to 1955 to prevent disastrous changes to 1985…without interfering with his first trip.
Directors: Robert Zemeckis
Cast: Michael J. Fox, Christopher Lloyd, Lea Thompson