Simon Lewis is the best friend of Clary Fairchild. When she discovered the Shadow World, she broke the rules and told him about it. As such, when offered the chance to become a Shadowhunter, Simon accepted. However, he was kidnapped by Valentine Morgenstern before he could complete his training and was forcibly turned into a Shadowhunter on Valentine's ship to become part of his army. While there, he meets and befriends several of the new recruits. Chief among them is George Lovelace.