Sarah studies Steve's secret journals trying to find out who wrote The Ladder, bringing her closer to Professor Neill. But a death in the family brings her and Eddie together, and it makes Sarah long for her faith. Harold discovers Mary stole his Championship rings, so he and Cal must find out who has them, and try to get them back.
Eddie travels to Paris to open Europe's first Meyerist Center, and he brings Sarah along with the hope to restore her faith; but her insatiable search for Lilith may have taken her beyond the point of no return. Meanwhile, Cal and Mary have their own plans.
Eddie leans on Cal to help him cleanse away the increasing darkness within him and the Movement, while Cal continues to plot to overtake control. Sarah reconnects with an old friend, risking her new relationship in the process.
Sarah's determination to find the source of Meyerism pulls her farther away from her family. Eddie struggles to manage the flock without Vera, who has returned to bare her secrets to Cal through one of the rituals.
Eddie and Hawk take a trip together to break Caleb out of Christian conversion therapy; Cal's repressed memories make him confront his past; Sarah and Vera face off over Lilith; Mary surprises herself in a challenging situation.