Jace left his sister behind to join Valentine. Jocelyn is awake. Both Val and Clary are working on their relationship and Clary has stopped pushing her to talk to Jocelyn. Alec and Val are together as are Magnus and Lucy. But all of them can feel the missing piece that is Jace. Valkyrie is trying to find her brother and bring him home at all costs. Lucy is worried about both her parabatai and her brother neither of who have been the same since Jace left. Will Jocelyn answer Val's questions? Will Jace learn who his parents really are? Will Valentine reveal the truth about Valkyrie's twin? And what about the mysterious Shadowhunter who goes by the name of Sebastian Verlac? And what happens to Val's relationship with Clary after Aldertree releases the dead or alive order on Jace?