When Happy Go Lucky, a young quarter pony, is moved from his home to the stables at Big Apple Barn, endless adventures await him! Happy Go Lucky is a young pony. He loves living with his mom at Shoemaker Stables! But when he's sent to help at a riding school called Big Apple Barn, everything in Happy's life changes. Big Apple Barn is full of new adventures! Happy has never met other horses and ponies before. He has a lot to learn, and he misses his home. Will Happy Go Lucky find his place at Big Apple Barn?