What happens when Tris is a total badass and her enemy and her fall in love. This is some serious butting trouble.

After the war with Sebastian in City of Heavenly Fire, Alec, Magnus, and Maryse and Luke are dead. Jace and Clary are still together but they're depressed. All Jace ever does is sit in his room and all Clary does is try to pull him together. Will they be able to move on and save their relationship?