Johnny Dembro has been raised on her father's ranch and is more of a ranch hand than a young lady. Big changes are in store for Johnny when a certain tall, dark stranger arrives in need of help.
A tomboy, Johnny usually wears boy's clothes and loves to ride. She loves her father John very much and is concerned that her stepmother has a wondering eye.
One day, Johnny sees a stranger riding up to the house and pulls a rifle on him, but her father reacts more calmly to the stranger's arrival, seeing that he's injured. Johnny helps make the stranger comfortable in the spare bedroom until her stepmother Sheila shoos her away to fetch the doctor.
The presence of this stranger named Cheyenne has Johnny all aflutter. At breakfast, she foregoes her usual clothes for a dress and feigns good manners and propriety. The men at the table are amused at her obvious crush on the stranger. The best news of the morning is for Johnny: Cheyenne just agreed to stay on at the Dembro ranch as a hired hand.