Simon has been a human and a vampire, but after the events of City of Heavenly Fire left him stripped of his memories, he isn't sure who he is any more. When the Shadowhunter Academy reopens, Simon throws himself into this new world of demon-hunting, determined to find himself again. Whomever this Simon might be - join him on his journey to become a Shadowhunter, and learn about the Academy's illustrious history along the way, through guest lecturers such as Jace Herondale, Tessa Gray, and Magnus Bane.