"The Magical Unicorn Society has existed for centuries, dedicated to studying and protecting the magic of unicorns. Now, it's revealing a brand-new and exciting family of unicorns called the Dark Hearts. From their creation and banishment to a dark and dreadful place known as the Shadow Realm, to how they defeat a terrible monster called the Demon King, this book tells eight fascinating tales of rare encounters with these beautiful and elusive creatures. Find out what they loo like, what their powers are and more inside this ultimate guide." -- Page 4 of cover.