The people of Walmington-On-Sea are becoming apathetic about the war effort. When practicing on a firing range, Mainwaring is told to keep the noise down and Hodges is verbally assaulted for his efforts as chief warden.

Mainwaring decides to scare his townfolk by getting the platoon to dress up as fifth columnists and marching through the countryside 'asking ze questions!' Will their plan work? Or will Mainwaring just end up looking rather silly infront of Captain Square and the Eastgate platoon?

Capt Mainwaring is to be an umpire in a war game exercise so he gets the use of a car Pike meets a girl and uses the car to take her out but they stay out all night and the whole town is shocked

During a ' Wings For Victory ' fundraising event the platoon decide to stage a reenactment of the battle between St George and the Dragon but friction starts when Hodges and the wardens plan the same thing

The platoon take over from the regular army in guarding some vital telephone wires During an air raid a bomb lands in the wires and a way has to be found to get it down before it explodes

Lance Corporal Jones wants to marry Mrs Fox but has to get Capt Mainwarings permission.

During the reception an invasion alert is called and Jones spends his wedding night on the beach doing guard duty