It documents a postwar working class London family's first visit to a summer holiday camp. It was the first film to feature the Huggett family, who went on to star in the Huggetts Trilogy. It resonated with post-war audiences and was very successful. The film is a kaleidoscope of various lives at play by the sea, in a Butlin's holiday camp. They include a pregnant young girl, a group of gamblers and a murderer seeking his next victim.