Sixteen-year-old Texas, in order to keep the ranch left to her by her grandfather, sells some acreage to a movie company as a location for western films, and finds herself becoming involved with a young actor.

Convinced that she is wanted only as a servant in her new home with relatives on a Wyoming ranch, orphaned, eleven-year-old Abby is unhappy until she finds and befriends an injured Mustang and determines to try to save it no matter what the cost to herself.

In 1926, ten-year-old Kate, living with her family on a ranch in Alberta, Canada, is convinced that the Quarter horse she receives for her birthday can win the cattle cutting contest at the annual fair and determines to participate even though the contest is open only to boys.