Petty con artists, Bud & Lou mistakenly join the Army evading the cops. The cop chasing them winds up as their drill instructor. A rich young man and his former working class chauffeur are not only in the same unit, they're vying for a pretty girl who seems attracted to both. Two ex-soldiers return from overseas--one of them having smuggled into the country a French orphan girl he has become attached to. They wind up running into their old sergeant--who hates them--and getting involved with a race-car builder who's trying to find backers for a new midget racer he's building.