Indecisive heiress Dee Dee Dillwood is pushed into marrying her sixth fiancée, but unable to face the wedding night, she flees into the adjacent hotel room of commercial pilot Marvin Payne, who just wants to sleep. She then persuades him to take her to California.

Set at the beginning of the Civil War, Tap Roots is all about a county in Mississippi which chooses to secede from the state rather than enter the conflict. The county is protected from the Confederacy by an abolitionist and a Native American gentleman. The abolitionist's daughter is courted by a powerful newspaper publisher when her fiance, a confederate officer, elopes with the girl's sister. The daughter at first resists the publisher's attentions, but turns to him for aid when her ex-fiance plans to capture the seceding county on behalf of the South.