All-American couple Brad Majors (Barry Bostwick) and fianceé Janet Weiss (Susan Sarandon) decide to visit their old professor. Unfortunately, their car breaks down outside a sinister house, and they are forced to stay the night. Inside the house Brad and Janet find a world filled with subversive sexuality.
The film itself is filled with great tunes and a slightly loopy plot. So it's just like your common-or-garden musical in that way. Where the film really takes off is in its subversion of sexual mores as Brad and Janet break free from their normality.
Richard O'Brien created "The Rocky Horror Show" for the London stage, and in addition to writing duties also shows up as butler Riff Raff. But the film belongs to Tim Curry as cross-dressing scientist Frank N Furter.
And if you've seen it so many times that you're tired of singing along, you can gain new thrills by seeing it at the cinema and entering the world of audience participation. Dress up! Throw rice! Squirt water pistols! Shout at the screen and enter conversations with the characters in the film! Many claim that audience participation is the essence of the Rocky Horror experience, and the film itself merely an excuse for this mayhem.
Will it appeal to everyone? Certainly not. But for those willing to experiment with something a little bit different, a little bit outré, "The Rocky Horror Picture Show" has a lot to offer.
"The Rocky Horror Picture Show" is on BBC2 on Saturday 26th August at 9:55pm (20:55 GMT)