Before going on stage, an actor playing Lucifer (Stanley Holloway) comes back to the theatre drunk after having a discussion in a pub about the scourge of television. After he knocks his head he is introduced to Lucifer himself (also played by Holloway) who shows him a story about a TV set and how it causes misery to its various owners.
An interesting minor Ealing comedy about the then very real threat of television on cinema, as cinema itself had done previously with the theatre. It's patchy, but also highly enjoyable. The film is peppered with well known names in this otherwise very topical film. Holloway of course appears in a couple of roles, but his voice as Lucifer was dubbed by Geoffrey Keen. Based off a play by Arnold Ridley, the future Private Godfrey in 'Dad's Army'.