In the land of the Iron Kingdom, a new peace and prosperity is celebrated as a new king reigns. But both under people's feet and in the far corners of the continent, trouble ferments and tunnels. Now, former soldier-turned-yeoman farmer Henn of Blackrush finds himself called out of his new, prosperous, and frankly-dull life to the capital of Staghome by an old friend. Here, he joins an secret group including the mounted-warrior Dunna of Clasphand, the secretive diplomat Ghao of the court of the Dan Empire, on a secret mission into the far north lands to help preserve that new peace and prosperity. There, they'll discover more than they bargained for, and ancient secrets no one in the Iron Kingdom is ready to face.