After being rescued by a pair of unexpected allies, Damion Maverick teams up with Michael and the remanence of the former United States military to shut down The Institute and rescue as many as they can from the control of The Authority and bring them to Safe Haven.

But even in Safe Haven, the shadows of The Authority have followed them in as Michael's actions start to become erratic and whispers of an invasion make their way around the camp. With no other options, Damion must escape with Michael and his new team above ground to begin searching for the location of a secret lab described in a mysterious journal.

Can Damion and company complete their mission and find a way to save Avendale or will the powers of the new Governess stop them in their tracks?