Nick Herondale, the son of clary and Jace Herondale, gets a message from the clave. There's a strange new girl that the clave is getting suspicious about. A girl with strange abilities. He is sent undercover to find her, and save her. But when he found her, she was much more complicated than he thought. Soon he gets wrapped up in a war that he never knew existed. And all the sides in this war have one goal. To get the ultimate weapon. Elena Ravenswood. (All characters belong to Cassandra Clare except the new character who is mine)