Reservist Tommy Smart - who has made his fortune since the war selling army surplus - arrives at an army camp, with his chauffeur/valet, for two weeks' training. Bank manager Corporal Jones is in Tommy's squad. Sylvia, Jones' daughter, wishes to marry Lieutenant Robson, a National Service officer. Smart is under the orders of his old enemy Sergeant Thickpenny and R.S.M. Brittain; various parade ground antics ensue.
Not all service comedies are worth the effort. Army-surplus salesman Trinder is drafted, along with his chauffeur, and causes havoc in the barracks. He sings (unwise). Rolf is one of the troops (he paints). Trinder was well past his best and resorts to forced mugging with little reward.
