Old Bill has grumbled his way through the trenches of the First World War. Now it is the Second and, envious of his son, Young Bill, he decides to enlist. He finally enters the Pioneer Corps, which is based near his son. When Young Bill goes missing during a raid, Old Bill shows that there's still life in the old dog yet!

Ealing comedy starring music hall star George Formby. An eager newspaper reporter (Formby) goes undercover to expose a gang of counterfeiters. Posing as a wrestler and waiter in his investigative efforts, George proves a greater menace to public order than the criminals he is chasing.

Demobbed from the army Nat, Norman and Dan get new jobs, solve a crime and stage a concert party.