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.

With the occasion all but overshadowed by her sister's upcoming wedding, angst-ridden Samantha faces her 16th birthday with typical adolescent dread. Samantha pines for studly older boy Jake, but worries that her chastity will be a turnoff for the popular senior. Meanwhile, she must constantly rebuff the affections of nerdy Ted, who is unfortunately the only boy in school who seems to take an interest in her.