Larry Weinsteinberger has lost almost all of his fortune, funding appallingly bad movie ideas. Determined to stay in 'showbiz', he invests his last few dollars in setting up a TV Channel, number 6597423 in the listings. With a brand new channel and nothing to put on it, Larry then makes the classic mistake of employing Diddy Dick and Dom to take charge of programming. Diddy Dick and Dom have their own TV station! Diddy TV sees the ingenious puppet-based creations Diddy Dick and Dom become the producers, schedulers and presenters of the channel, with pastiches of a range of popular titles and genres.