Stanley Baker's O'Donovan is sent to steal the plans of a rival company's racing car designs, to ensure his employers win the competition. However, when opening a safe containing the plans, he triggers an alarm leading to a gun battle where he kills a number of people. James Robertson Justice, alarmed by the scandal surrounding the killings, orders his agent be killed surreptitiously to hide his involvement with the plot. The film uses original footage from the Mille Miglia , an Italian open-road endurance race, featuring classic period racing cars.

When heavy fog prevents any flights from leaving London Airport, a group of passengers are put on a bus driven by Percy Lamb to drive to another airport. The fog is that heavy Percy doesn't know where he is going or that he is carrying stolen gold bullion that the robbers and police are relentlessly pursuing.

A somewhat prudish young lady inherits a nudist camp. She wants to shut it down, but is persuaded by its members to give the place a look before she takes any action. She agrees, and while touring the camp finds herself attracted to one of the patrons. The trouble is, so does another young woman at the camp. Complications ensue.