Arthur and his friend, Stinker, are contacted by a member of the BBC to inform them that they will soon be given an audition. On hearing this, the duo decide to install themselves in a disused studio on the roof of the Broadcasting House. There they announce they will transmit a pirate broadcast at eight o'clock that evening. But with the public, the BBC and the police on their tail, will they make it, and if they do, will it be a success?