So this takes place three years after the first What You Wish For. Alex and the girls have been getting along in the human world when the day had finally come where they were tasked with having to stop ShadowThunder from causing havoc in the Equestrian Universe. Unfortunately Alex's problems are only getting worse when he finds out ShadowThunder is seeking out a human whom she believes to hold the power to create an entire universe. Alex must now seek out the most powerful books known to ponydom starting with the Book of Unicorn. The Book of Unicorn contains the most powerful spell that would grant the reader infinite knowledge on unicorn magic. With this book along with another three, Alex will teach this creator how to wield the omnipower within them to stop ShadowThunder once and for all.