A New York inventor, Tom Jeffers, needs cash to develop his big idea, so his adoring wife, Gerry, decides to raise it by divorcing him and marrying an eccentric Florida millionaire, J. D. Hackensacker III.

A cowboy tries to protect a young woman whose father was murdered because he had railroad maps that showed the location of a proposed new line. Now the killers are after her because they think she has the maps.