Horse and Zebra are best friends, but they couldn't be more different! While Horse is steady and sensible, Zebra is zany and creative. But what they have in common is that they will always look out for each other, and they're always ready to help another animal in need. Horse's friend Sheepdog needs someone to watch her puppies while she goes to a sheep-herding competition. Horse and Zebra volunteer for the task and soon realize the need to balance responsibility and fun while caring for the puppies.