Three young girls try to help their divorced mother find the right husband.

Elderly schoolteacher Nora Trinell, waiting to meet presidential nominee Dewey Roberts, recalls him as her student back in 1916 and his relation to Dan Hopkins, the man she married and lost.

Based on the story of the famous Mormon leader, it follows Brigham Young and his challenge to transport his people across the Rocky mountains to settle in Salt Lake City. The plot focuses on two fictitious characters, Jonathan Kent and Zina Webb and the hardships they have to face along the way.

Roger Hudson, a wealthy businessman who has moved to Washington to work for the government as a "dollar a year man," is late for a radio broadcast about his new department, the Mobilization of Woman Power for War. He takes a cab driven by Dixie Dugan, who hopes that being a cabbie while the country's men are away fighting will help the war effort. Her incompetent driving, however, results in an accident for which Roger must take responsibility in order to reach the radio station in time. Dixie then returns home, where she lives with her father Timothy, who is constantly practicing his air raid warden duties, her mother Gladys, an aspiring Red Cross worker, and cousin Imogene, who studies incessantly to become a "quiz kid." The Dugans rent out their spare rooms to Dixie's fiancé, Matt Hogan, and to blustering Judge J. J. Lawson. Matt, who works in a munitions factory, wants Dixie to settle down and marry him, but Dixie is determined to help her country.