Authors note:

In this story everything is switched. Imagine if clary was a cocky prick and jace was a more subtle and kind to say the least. Alec is Clary'sparabati. Simon is a one of jace's closest friends. Simon is a vampire, jace doesn't know but Simon will help him discover the shadow world.

Jocelyn thought valentine had already killed Jon and Clary so she took jace after Celine died, know he had extra angel blood because she knew Val would use him as a weapon. Jace thinks Jocelyn is his biological mother. CLARY AND JACE WILL NEVER THINK THEY ARE ACTUAL SIBLINGS!Clary and Jon hold resentment twards their mother even though they know she thought they were dead . Jon and Clary love their father even though he was strict he never hurt them and loved his children. Clary and Jon both think Valentine is dead. Clary and Jon know about their extra blood; Jonathan will come in during later chapters.