The story takes place in Conajohara, a newly established Aquilonian province recently annexed by King Numedides from the Picts. Balthus, a young settler on his way to Fort Tuscelan at the Black River, the province's border to the Pict Lands, encounters Conan in the forest slaying a Pict. Accompanying the young man back to the fort, Conan finds the corpse of a merchant left by a Pictish wizard named Zogar Sag and slain by a swamp demon. The fort's...