Chico, a four-year-old American Quarter Horse, longs for a bigger life amid the vast grassland and big blue sky that lies beyond. When Chico comes to live with Sierra, a teen who dreams of being a cutting horse champion, his energy and her enthusiasm seem like a perfect fit. But Chico is afraid of cows and instinctively tries to chase them off. Can Sierra, a beginner too, help him learn enough discipline to conquer his fears and instincts, and find his own true self?