Jace and Clary get into a fight and she storms out. Later, Jace gets a call and is told the Clary got hit by a car and is in hospital. Set one year after CoHF. I know the summary sucks but give it a chance.

Clary decides to visit the institute. Whilst Jace is away for a few days, she falls down sick. Is it the simple flu like she thinks or is there something bigger going on? When Jace arrives home, will he figure it out or will it be too late?