Archie Lee Meighan is a failing cotton gin owner who is married to Baby Doll, a 19-year old childlike beauty whose father arranged the marriage for financial reasons. As Archie awaits the arrival of Baby Doll's 20th birthday, the day that they are supposed to consummate their marriage, he faces interference from business rival Silva Vacarro, who plots to seduce Baby Doll away from Meighan.
A Michigan farmer and a prospector form a partnership in the California gold country. Their adventures include buying and sharing a wife, hijacking a stage, kidnapping six prostitutes, and turning their mining camp into a boom town. Along the way there is plenty of drinking, gambling, and singing. They even find time to do some creative gold mining.
Newly-promoted if none too happily married Howard Brubaker leaves a rowdy company party early with the stunning Catherine, whom it turns out is herself unhappily married — to the boss. They spend an innocent night in New York becoming more and more attracted to each other, so that when Catherine announces she intends to leave her husband and return to Paris, Howard asks to go along too.