There are unicorns behind Magic Moon Stable, but no one knows they exist except Iris and Ruby. As Unicorn Guardians, the two girls must protect the unicorns to keep them safe from the outside world.
Whitney Sanderson grew up riding horses as a member of a 4-H club and competing in local jumping and dressage shows. She has written several books in the Horse Diaries chapter book series. She is also the author of Horse Rescue: Treasure, based on her time volunteering at an equine rescue farm. She lives in Massachusetts.
