Mortal Instruments revolves around Clary Fray (Lily Collins, Mirror Mirror), an ordinary teenager living in modern New York City, who discovers
the truth about her lineage after her mother (Lena Headey, Game of Thrones) mysteriously vanishes: namely, that she is a descendant of the Shadowhunters, a legion of half - angel warriors who (in secret) protect humanity from the forces of darkness.