At nyc, Clary Fray, a seemingly ordinary teenager, learns that she is descended from a lineup of Shadowhunters -- half-angel warriors that protect humanity from evil forces. Clary enters Downworld, an alternative realm filled with a multitude of other animals, vampires, and demons and joins forces with a set of Shadowhunters after her mother vanishes. Her companions and clary must detect and protect an ancient cup that holds the key to her mother's future.