The Cupcake Castle is hosting a baking contest, and Ruby cannot wait to compete. But when a recipe mix-up almost ruins her cookies, she tries adding magical starberries from the Enchanted Forest to save them. Much to Ruby's surprise, she makes it to the next round of the contest. After some more baking, she discovers that starberries can make anything taste good. The title of Junior Baking Champion is within her reach . . . if she cheats. Can Ruby win without the use of magic? There are unicorns behind Magic Moon Stable, but no one except Iris and Ruby know they exist. As Unicorn Guardians, it is their job to protect the unicorns and their magic to keep them safe from the outside world.