Mystery surrounds Miss Becky McCoy when she shows up alone and unexpectedly at the Campbells’ ranch house in Southeastern Arizona Territory. Fourteen-year-old Cody Campbell befriends the quirky girl in the bright pink, feathered hat and becomes enthralled with her as he learns that she is deficient in basic spelling and reading skills, but she possesses the ability to communicate with horses and has the skills to cure them of their ills.