On her birthday, Clary Fray discovers a surprise concerning her life. The teenager is not who she thinks she is -- she comes from a long line of human-angel hybrids, called Shadowhunters, who hunt demons. After her mother is kidnapped, Clary is thrust into the world of demon-hunting. Clary relies on mysterious Jace and fellow hunters Isabelle and Alec to help her navigate the dark world. While living in this new world among creatures like vampires and werewolves, Clary's best friend Simon helps her uncover answers that could help her find her mother.