Wyatt's community spirit is tested by the unexpected arrival of two strange neighbours intent on joining his Neighbourhood Watch.

In order to impress other less organised Neighbourhood Watch groups, Wyatt sets out to make a crime-prevention video.

A series of daring night-time thefts from the garden of Mr and Mrs Lawson charges Wyatt with the determination to catch the culprit red-handed. Applying the military techniques with which he was instrumental in winning the Second World War, he sets up a lookout in their potting shed.

The security marking of property plays an important part in the success of any Neighbourhood Watch scheme, yet Sgt. Springer - not known for his intuition - is more than worried by the keen enthusiasm of Wyatt and Pitt to get their hands on police engraving and marking equipment.

Although reluctant to admit that the only way to run a Proper Neighbourhood Watch is in conjunction with the police, Wyatt is more than eager to attend the meeting at the village hall where the Crime Prevention Officer will give details about the scheme.

When the retired Major Wyatt hears that his sister Edwina's house has been burgled in broad daylight, he decides that the time has come to take action as a citizen against the rising tide of crime. Without bothering to wait for proper police help, he sets about forming his own Neighbourhood Watch.