This episode picks up with Marion and his Freedom Fighters in a relentless pursuit of Amos Briggs, the man responsible for killing the servant boy Toby and Young Gabe Marion, the Swamp Fox's nephew. Finally, Fran is convinced to ease the chase because his men are tired, as well as ill with swamp fever.

The Tories have devised a plot to control the salt and medicine in the colonies in an effort to break Rebel resistance. The Swamp Fox enlists the aid of Mary Videaux, his fiancee, to procure the much needed medicine for him. Mary is still believed by many to be a Loyalist, and she convinces Colonel Tarleton to let her have the quinine and salt.

While meeting her at Monck's Corner, Francis finds Amos Briggs in a tavern and captures him with the aid of Old Joseph, Toby's father. With Briggs held captive, Marion returns to camp with Mary--she insists on nursing his sick men back to health--and orders the Tory locked in a crude holding cell.

A young rider comes to camp to join Marion's b