The quiet village of Bramley End is taken over by German troops posing as Royal Engineers. Their task is to disrupt England's radar network in preparation for a full scale German invasion. Once the villagers discover the true identity of the troops, they do whatever they can to thwart the Nazis plans.
A group of travellers, each with a personal problem that they want to hide, arrive at a mysterious Welsh country inn. There is a certain strangeness in the air as they are greeted by the innkeeper and his daughter. Why are all the newspapers a year old? And why doesn't Gwyneth seem to cast a shadow?
George Formby plays George Harper, a tavern owner, who works to turn a waitress from her current employer, a rival tavern owner, when Formby falls in love with her.
Comedian Tommy Trinder plays it straight in this tribute to the wartime AFS (Auxiliary Fire Service). The dedicated band who kept the fires of London under control during the blitz and fire bombings of WWII.