What Are Reins?

Peyton Richmond is an arrogant horseback rider, a participant in dressage and jumping. After an incident, looses the use of her left arm, leaving her disabled for her dream discipline. With a help of a past professional horse trainer, she leaves to America unwillingly, realizing what might keep her with horses.

Peyton knows that western riding wouldn't take her the other arm, but she is well aware that she hated it ever since she started English riding. Will Peyton live with the incident or abandon horses forever?