King Louis XV gives the Four Musketeers a mission, and D’Eon asks Queen Marie why his sister’s soul has not passed on.

D’Eon’s battle against Vorontsov is finally finished, with Lia dealing the final blow. The Four Musketeers follow Robespierre to London.

D’Eon is taken to Le Chateau d’Orleans. Robin eludes capture and follows to the mansion to rescue D’Eon, who manages to escape and ends up dueling with Teillagory.