Before the surface was ceded to the lesser breeds of men, and the superior forms ascended into the heavely yonder, the men of Lau dwelled deep in the pristine undergrounds of the celestial installation, when its corruption had yet fully set. Halycon Undead is a story of a boy from the Northden in such realms underneath, who thinks he will be a hero, generations before him and generations after him, there is an evil that lurks in their plane, it has been fought time and again, a great hero always arises, and each time in the long peace; men forget, it returns again but its motives are unclear to the Northmen. (Book in the "Mortal Men" Saga)

Prerequisite book: (Sins Saga Book 5)