The negligent bus driving of Stan Butler (Reg Varney), a driver for the Town & District bus company, finally causes a major accident in the garage forecourt that injures Blakey (Stephen Lewis (actor)), while wrecking the manager's car and two of the company's buses. As a result of this, both he and Blakey are sacked, along with Stan's close friend and conductor, Jack (Bob Grant (actor)). Forced to look for new jobs, Stan and Jack manage to secure work at a Pontins holiday camp in Prestatyn, North Wales, as a bus crew for its tour bus. But their joy is short-lived when they discover that Blakey, whose foot is still recovering, also has a job at the camp as its new security inspector. Despite this, Stan decides to invite his family to stay there for a holiday on his staff discount, though his tight-fisted brother-in-law, Arthur, refuses to pay for the train fare, instead relying on his motorcycle and sidecar to transport the Butler family, consisting of himself, Stan's Mum, his wife and Stan's sister Olive, and his son Little Arthur. However, a mishap while travelling to the camp leads to them losing most of their luggage in the river, while one case they recover is so filled with mud that the clothes inside are ruined.