An American science fiction–comedy film series that follows the adventures of a high school student, Marty McFly and an eccentric scientist, Dr Emmett L. Brown as they use a DeLorean time machine to time travel to different periods in the history of Hill Valley, California.
Back to the Future Part II
Marty and Doc are at it again in this wacky sequel to the 1985 blockbuster as the time-traveling duo head to 2015 to nip some McFly family woes in the bud. But things go awry thanks to bully Biff Tannen and a pesky sports almanac. In a last-ditch attempt to set things straight, Marty finds himself bound for 1955 and face to face with his teenage parents -- again.