It is a normal day for you and you're twin sister Clarissa or better know as Clary Frey (Fairchild). You sat there in the diner with you're sisters best friend Simon Lewis, to wait for you're sister Clary if she made it into the school of arts. She came into the diner with a sad face. You and Simon looking at the document and saw that Clary made it into the art school and that she was just playing sad so you all laughed. But everything changed when she meet Jace, Alec and Izzy. The Shadowhunters of the Angels. [5 years later]
Maryse, the mother of Alec and Izzy and the also the adopted mother of Jace had new information....she did know if it was good or bad due what happened with Clary and her biological Brother Jonathan. She walks to the others in the big hall to discuss what she had found. Clary, Jace, Izzy, Alec, Simon, Lucian, Magnus alongside with Lydia Branwell are there to listen to what Maryse has to say. She told them that Clary had another sibling, who was hidden from Valentine Morgenstern and his circle by Clary and the other twin sibling mother Jocelyn Fairchild herself because the sibling is unknown except for having the same powers as Clary and being even Clary's twin.

Clary:"i- I can't believe it..."

Jace:"the better question is: Where?"

Alec:"Another one?"