Stodge City is in the grip of the Rumpo Kid and his gang. Mistaken identity again takes a hand as a 'sanitary engineer' named Marshal P. Knutt is mistaken for a law marshal. Being the conscientious sort, Marshal tries to help the town get rid of Rumpo, and a showdown is inevitable. Marshal has two aids—revenge-seeking Annie Oakley and his sanitary expertise.

• Peter Rogers Productions
• Sidney James
• Kenneth Williams
• Jim Dale
• Charles Hawtrey
• Joan Sims
• Angela Douglas
• Bernard Bresslaw
• Peter Butterworth