Having fallen in love with an ordinary person, the wolf girl Calla from the Warrior caste decides to break her oath to the Guardians and runs away from the wedding ceremony with her beloved Shay. Together they are captured by the Bloodhounds, longtime enemies of the Warriors, who tell them the truth about the Guardians. Having learned about the lies in which they kept the Warriors for many centuries, Calla and Shay form an alliance with the Bloodhounds to stop the Guardians and the evil they bring to the world. "War of Witchcraft. The Secret of the Guardians" is the second book in the trilogy about the wolf girl Calla and her friends from the Warrior caste.