'Luke remembers the first time he saw Digger. The big bay gelding had raced Luke's bike along the fence line, galloping up the paddock like his tail was on fire. Before long, encouraged by his new friend Penny, Luke swaps bike-riding for horse-riding lessons. Cliff, who has owned Digger since he was a foal, offers to let Luke keep him at home, but Luke's dad is against it. When Digger unexpectedly goes missing, Cliff, Luke and friend Gino hit the road to rescue him in a journey that will take all their courage and perseverance. This book is the gripping sequel to Stafford's Chiko books.' (Publication summary)