A deadly massacre, thought to be sparked by Joe Carroll, leads Ryan and Mike into very dangerous territory. But as more details are revealed, they realize another leader might be on the rise. Meanwhile, Joe continues to train the Korban cult and confirms his new plans with Emma and those who doubt him.

After a series of public condemnations of Joe and his followers, Joe targets the son of a man who stands against him. Meanwhile, Ryan is faced with the shocking news of Claire's reappearance and Mandy makes a decision that leads her to a familiar face which could undo all that Joe has been working for.

Ryan tracks down the location of the Korban compound with hopes to infiltrate the cult and capture Joe Carroll, but all doesn't go exactly as planned. Meanwhile, Claire asks Carrie to deliver a message to Joe, and Weston makes a decision that will change the course of his life forever.

Joe Carroll puts his final plan into action, threatening the lives of many, as Ryan and Mike go to great lengths to stop him and prevent more innocent lives being lost. Meanwhile, Claire makes a decision that leads her into dangerous territory, and Mark and Luke attempt to figure out their next move.