Magic Tree House Merlin Missions: Stallion by Starlight

To help Jack and Annie find four secrets of greatness, the magic tree house whisks them back in time to meet Alexander the Great. He should know all about greatness, right? But young Alexander is bossy, vain, and not great at all! It’s going to take a wild black stallion, magic from Merlin, and a lot of bravery for Jack and Annie to succeed.