The horse riding party. It's Summer's Eleventh birthday, she plans a birthday hack around the forest with her friends. Summer has led many learner riders around the forest on their birthday hacks and now it's her chance. She intends to have a good gallop but, will Jess spoil her plans... Heart warming story of fun at the stables. Any horse mad child will love. Other books in the pony cubes collection. Summer and Polo. Ruby's story. The break-in. The horse riding party. What will be will be.