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?

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 quickly learning his way around Big Apple Barn. He's even making new friends like Roscoe, the barn mouse, and Ivy, the trainer's youngest daughter. There's so much to explore! But Happy soon discovers that working as a school pony won't be easy. Every rider is different, and Happy isn't sure if he likes that. And not all of the animals at Big Apple Barn are very friendly...

When Happy Go Lucky, a young quarter pony, is moved from his home to the stables at Big Apple Barn, endless adventures await him! Just when Happy Go Lucky is starting to feel at home at Big Apple Barn, everything changes. There is a new pony in the barn: Sassafras Surprise, otherwise known as Sassy. Everyone wants to learn more about her. Suddenly, Happy's friends are not around as much. They're all spending time with Sassy, instead! Even worse, Sassy doesn't seem interested in being friends with Happy at all. What's a pony to do?

When Happy Go Lucky, a young quarter pony, is moved from his home to the stables at Big Apple Barn, endless adventures await him! When the spring festival comes to town, Happy Go Lucky and his friends can't wait to see what it's all about. But when Roscoe the barn mouse disappears, Happy worries that he's gone off to the festival alone. A trip to town could be dangerous for a tiny barn mouse! Can Happy find Roscoe before it's too late?