Sergeant Grimshawe wants to retire in the flush of success by winning the Star Squad prize with his very last platoon of newly called-up National Servicemen. But a motley bunch they turn out to be, and it's up to Grimshawe to put the no-hopers through their paces.

William Hartnellas Sergeant Grimshawe
Bob Monkhouseas Private Charlie Sage
Shirley Eatonas Mary Sage
Eric Barkeras Captain Potts
Dora Bryanas Norah
Bill Owenas Corporal Bill Copping
Charles Hawtreyas Private Peter Golightly
Kenneth Connoras Private Horace Strong
Kenneth Williamsas Private James Bailey
Terence Longdonas Private Miles Haywood