The film concerns a police hunt for the criminal known as The Frog.

David Phillips (Patrick Macnee) is running down the darkened streets of London's Limehouse district, pursued by two men with guns. He finds a public phone and puts a call through to Dick Barton (Don Stannard), but before he can report, a shot rings out. Barton must piece together what Phillips found out that got him killed. Phillips had been assigned to protect Professor Mitchell (Percy Walsh) and his new development, a ray capable of exploding any unstable element aboard an aircraft in flight. Mitchell has been targeted for kidnapping by Serge Volkoff (Meinhart Maur), a foreign agent from Eastern Europe, as part of a larger, much more sinister plot to destroy England and cripple Western Europe. Complicating matters further is that Mitchell's daughter (Joyce Linden) has also been kidnapped, and Barton must contend with Volkoff's crafty female companion Anna (Tamara Desni).

Life is not going well for the Huggetts. Father has lost his job. Jimmy and his wife cannot get to South Africa where he has a new job. So the family decide that they should go to South Africa by truck. With their travelling companion they travel across the desert which includes a brush with the law.

Hyman Goldberger, the president of film studio Super-Colossal Pictures, is in trouble--his major backer is threatening to stop financing his pictures. He finds a group of six wealthy individuals who may want to become investors in the studio if his disgruntled backer pulls out. Unfortunately, his bumbling runner Albert picks that day to invite six of his street musician friends to be in the film that is currently shooting at the studio, and Hyman mistakes them for the potential investors. Complications ensue.

A highly respected clergyman is actually a former pirate who exacts vigilante justice in this British production.

In the very old-fashioned town of Ostend suddenly 13 suitcases are delivered to the Grand Hotel, with a note, that O.F. will be here soon and needs 6 rooms. This event, probably the biggest in 300 years, starts a small wave of modernisation, yet everybody is wondering who O.F. is.

A gang of spies held up in a haunted castle gives this team of celebrated British wireless comedians plenty of scope for laughs.

After Larry Darrent accidentally kills his lover's blackmailing husband, someone else is arrested for the crime. When he is found guilty, Larry and Wanda have just three weeks together before he must give himself up or let an innocent man go to the gallows.