While Francis' life hangs in the balance, Mary becomes the temporary leader of France, which makes her realize she can use her newfound power to save Scotland. Catherine, knowing about Mary's indiscretion with Condé, enlists in Narcisse to help beat Mary at her own game. Meanwhile, Bash, having been saved by a Woman in White and determined to send his attempted murderer to death, discovers a familiar face in the village.

Mary goes to extremes to halt Francis from his quest to catch Condé at any cost. Catherine, jealous of Narcisse's relationship with Lola, asks him to do something unforgiveable to prove himself, Kenna crosses a line with General Renaude and Greer makes a choice that might end her relationship with Leith.