Tom Masterick, a dock worker, is wrongfully convicted of a murder charge. His death sentence is commuted to a long prison term. When released as an old man, he vows to find the real killer.

Working-class girl Joan Dodd's plan to marry Jack Fowler is thwarted when her mother Gladys interferes. Hoping to improve her daughter's social status, Gladys arranges for Joan to wed her boss Adolphus Pickering while Jack is away at war. Jack arrives home to discover his love is engaged to another man. Who will Joan decide to marry?

The Huggett family go to a holiday camp, and get involved in crooked card players, a murderer on the run, and a pregnant young girl and her boyfriend missing from home.

An engineer leads the building of a trans-Atlantic tunnel linking Britain and the United States.

An eclectic group of characters set sail on Captain Lansen’s leaky cargo ship in an attempt to escape their various troubles. When a violent storm strikes, the ship is swept into the Sargasso Sea and the passengers find themselves trapped on an island populated by man-eating seaweed, giant crabs and Spanish conquistadors who believe it’s still the 16th century.