The story opens in the Mid-mark, an isolated clearing in a vast forest where the Mark-men—a free kindred of Gothic descent—have established a pastoral and agricultural society. The Wolfings, one of the foremost houses, live peaceably under their great timbered roof, tending their acres and guarding their ancient traditions. This tranquility is shattered when the war-arrow is passed, summoning the kindreds to unite against an invading army of Romans advancing from the south.
Led by the wise and formidable Thiodolf, the Mark-men hold a great folk-mote at the sacred Thing-stead to choose their war-dukes and prepare for the conflict. Thiodolf, despite his legendary prowess, carries a secret burden: his beloved Wood-Sun, a supernatural protector of divine kin, has beseeched him to wear a mystical, dwarf-wrought hauberk to preserve his life. Torn between personal survival and the traditional duty of a leader to fight unarmored alongside his kinsmen, Thiodolf struggles with his destiny as the war-cloud gathers.
The narrative follows a series of escalating skirmishes and councils. The Mark-men first ambush a Roman vanguard in the depths of Mirkwood, achieving a hard-won victory that boosts their morale. However, the main Roman host advances with superior numbers and disciplined formations, eventually overrunning and burning the homesteads of the kindreds, including the hall of the Bearings.
As the two forces draw closer for a decisive confrontation, the tension builds around Thiodolf’s fateful choice regarding the enchanted armor. The climax approaches as the combined forces of the Mark-men gather to defend their ancient lands. Through rich descriptions of heroic combat, tribal customs, and mythological undertones, the tale explores themes of duty, sacrifice, and the inevitable clash between an archaic tribal culture and an expanding empire.