The electricity went out months ago, all over the east coast. Due to her special powers, Azazel is employed by the government to help keep the peace as civilization crumbles around them. Azazel, Hallam, and Marlena lead a rag tag group on a mission to get west and get help, but there's someone in the way. Jason. He says he still loves Azazel. But she can't ever love him again.

Azazel arrives at Jason's community calling herself Joan, with no memory of who she is or what they've shared together. But Jason recognizes her, and once he realizes his powers of persuasion work on her now, he's willing to do anything to keep her with him, no matter how macabre or immoral. Kieran wanted to use the grimoire to purge Azazel's powers, but instead he's transferred them to himself, along with her memories. When he discovers the Order of the Fly wants to use him to control the world, he sets off to find Azazel, determined to return her powers and memory so that she can stop the OF's attempt at world domination.

Jason wants to punish himself for all the horrible things he's done, and so he's been lying low and wallowing in his guilt. When he discovers that Kieran and Eve are threatening his son, Chance, he finds Azazel so that the two of them can stop Kieran and Eve. Kieran and Eve, now in possession of Jason and Azazel's powers, have the world in a chokehold. They see everything, know everything, and control everything. The only way to stop them is for Jason and Azazel to take back their powers. But in order to do so, they must go through a series of tests, each pushing them deeper into their own darkness. If they get their power back, they run the risk of becoming the very evil they want to fight. But if they don't get the power, Kieran and Eve win and Chance is lost.