Story highlights In "Back to the Future Part II," Michael J. Fox's character goes to October 21, 2015

The film has gotten some things right but others not so much

(CNN) "Back to the Future" Day has finally arrived.

In "Back to the Future Part II," Marty McFly travels to October 21, 2015, to save his children, yet to be born in "Back to the Future's" 1985.

The plot gets tangled -- by fixing one thing, McFly and Doc Brown (and the villainous Biff Tannen) create a number of new messes -- but what remains is the film's vision of a year that was still more than a quarter-century away when the movie was shot and released in 1989. The entire trilogy is even being rereleased Wednesday, so you can see for yourself.

The film's record isn't bad, given that director Robert Zemeckis wasn't pleased with setting part of "Back to the Future II" in 2015.