An American movie company wants to shoot a science-fiction film using a British army barracks as a location, and its soldiers as actors.

Flirtatious mermaid Miranda swaps places with a schoolteacher who has gone on holiday. All is well until she falls in love with a human.

A scientist invents a pill to cure smokers of their nicotine addiction. However, when he makes his discovery public, he encounters strong resistance from the tobacco industry.

A newly-arrived army chaplain is put in charge of camp entertainment and has the idea of putting on a Brains Trust with local notables. Unfortunately for him, it emerges from a question on the rights and wrongs of marriage that there is more going on between three of the panelists than he wants to know about - though the audience obviously thinks differently.

At the outbreak of WWII the British realise they can't prevent the invasion of the Channel Islands. However, someone realises that a prize cow is on the islands and the Nazis mustn't get hold of her. This is the intrepid story of the cow-napping from under the noses of the Nazis.

Bill Buckle has had a dream--he wants to buy back the family fishing boat, the Cascade, which the family had to sell years ago to pay for his father's funeral. However, the boat is now owned by a trio of fishermen, and their plans for the boat don't coincide with Bill's at all.