Adventure and drama await in the exciting Mustang Mountain series. When Meg, Alison and Becky go on holiday to Wyoming, Meg and Becky are thrilled with the promise of riding wild horses. But Alison refuses to participate and constantly complains. It looks like their holiday is going to be a disaster. Then Alison discovers a wild horse that needs her help. As hope for the sick horse fades, she must conquer her anger and focus on saving a life.