Wendell Crowe plots to keep Willie working at the Ocean Deeps Mine by having Mr. Frawley give him a raise to take charge of new pit ponies. But Willie's job continues to interfere with his schoolwork and baseball practice. As a result, Willie's combative attitude begins to alienate him from not only his co-workers, but the rest of his friends... including his beloved horse, Sable who takes off. Willie must choose between his job or to find his horse and walk away from it all.
—matt-282