A rival car dealer tries to put Arthur out of business with a nightmare test drive, forcing him to advertise for trade on a local pirate radio station.
Arthur acquires a stall at a local exhibition centre, offering corporate hospitality, and falls foul of a rival trader, while Ray falls for the centre's manageress.
An old friend of Arthur's has employed someone to kill him. Arthur decides to hide Sidney in Dave's sister's caravan in Brighton while Ray tracks down the killer to tell him that his services are no longer required.