The time is 1964, and the Beatles, already a hugely popular group, are about to go on the Ed Sullivan Show for the first time, an appearance that launched them into a worldwide phenomenon. Already, girls are fainting during their concerts from sheer excitement at being in the same theater with them.
Pam Mitchell (Nancy Allen) is happy enough to be getting married but wants to bed one of the Fab Four before she does. Grace Corrigan (Theresa Saldana), a dedicated fan, is certain that if she can get some exclusive photos of the Beatles, her career as a photographer will be secured.
And then there are two people who feel that the future of civilization as we know it depends on their efforts to ruin the Beatles' appearance on Ed Sullivan's show. In this madcap comedy, when these people (and others besides) descend on the New York hotel the Beatles are staying in, things begin hopping.
This comedy was Robert Zemeckis' first feature. A protégé of Stephen Spielberg, he went on to direct Forrest Gump, Back to the Future, and Who Framed Roger Rabbit? among other popular features.