The story of Ken, his family, and horses resumes two years later in Thunderhead. Now twelve, Ken has turned Flicka into a well-trained and docile saddle horse. As the story begins, Flicka's new colt, Goblin, makes his first public appearance, and to the horror of Rob McLaughlin, he is a throwback to the Albino: white, powerful, built close to the ground. Throughout the book, Ken strives to keep Goblin (named Thunderhead by Nell) as he is, ungelded, with his very difficult personality unchanged. Unlike the first book, Thunderhead centers on the idea of renunciation; at the end, his dream of making Thunderhead into a racehorse abandoned, Ken releases him into the valley of the Albino to take his rightful place as a stallion in the wild. Rob, too, renounces a part of his dream and introduces sheep as the main cash line of his...