After their first threat, the demigods of Fort Azari are faced with an even more massive challenge: to stop Yharon from reforging the Key of Nightmares and unleashing devastation upon the world. After being sentenced to staying in ort Azari for all of summer, Wiliam illegally escapes from the safe haven to solve the problem for himself. In the second book of this trilogy, he faces many trials and tribulations to ultimately infiltrate Yharon's fortress and stop a catastrophe.