Octavia the Angel is the wife of Sam Winchester. They have two Nephilim daughters, on the good side of things, Ariel and Faith Winchester. Last book, Ava had been taken by Angels and the British Men of Letters who brainwashed her to try to control Ariel and Faith, and to kill Lucifer's sons, who are named Jack and Kai. Ava doesn't want to hurt or kill anyone, but when the spell forces her to lash out, she can barely control herself. Ariel and Faith could heal her little at a time, but if they went too far, they would potentially make the damage on her mind permanent and worse than it is. And if they went too long without healing Ava, then Ava would completely lose it. While Octavia knows that she doesn't want to kill Jack and Kai, the effects of the spell want her to, and there is a huge conflict inside her mind and body that Sam, Ariel and Faith have to help her control. Jack and Kai know for sure that Ava doesn't want to kill them, and want to find a way to help Ariel and Faith heal her. But what happens if Ariel, Faith, Jack and Kai are all trapped in the Apocalypse World when they're trying to save Mary, leaving Ava without someone to heal her the right way for months, making her worse until she gets her daughters and two boys she cares about, and her mother in law back, especially when her ex-boyfriend Gabriel is revealed alive and complicates matters?
The revelation of Castiel being controlled and manipulated into such things has shattered everyone involved.
Sam, Dean and Catty Winchester.
Ness and Bobby Singer.
And Octavia the Angel.
Catty also realizes that Castiel hadn't been the only one who had been manipulated and used by Crowley and Balthazar. She realizes what exactly happened, and she is willing to do anything to try to fix it, even while grieving Castiel and Octavia's deaths.
Dean is angry at Crowley and Balthazar. He is angry at Castiel for letting them get so far as to control him the way they had. He's angry that Octavia died. He's angry at everything. But when Bobby dies, will he continue to fall apart, or be there for Ness?
Sam is going through his Hell Wall that is crumbling, and Octavia's death. What remains of his Hell Wall comes in a shape that surprises him. It's not only Lucifer that he sees.
Ness has always been the level-headed one. The one to go to when you need help or advice. But when her father, Bobby dies, what will this do to her? Will she be angry, devastated or revenge-driven? Or all of the above?
What happens when Catty finds what she's looking for?
What happens when Ness gets her vengeance?
What happens when people that they think are dead don't stay dead?
And who else will they lose?