The Daemon Glaive, the black sword torn from the heartwood of the Tree of Lore to slay an angel and claimed by Ghul, the Daemon King, through which death by age and pestilence was released into Erilan, has been spirited away by Ash and Blackthorn. Though robbed of the mighty, necromantic token, Ghul is undaunted, and his campaign in the War of the Daemon Glaive to wrest dominion over Erilan is certain to end in nothing less than utter triumph. The hosts of the western alliance are too few in number to rebuff Ghul's vast swarm of daemons, dark warriors, and necromancies unless a prophecy is fulfilled.

This prophecy foretells great knights, mighty heroes, and unknown allies will unite to vanquish the Daemon King and destroy his dreams of a tyrannical empire, yet it seems a futile hope as countless fiends of Ghul's swarms gather in the passes over the Iron Mountains, preparing to sweep away their meager foes. Yet Ronan, the wizard once known as Eridal, casts his spells in hopes of raising a legendary king from a black curse in which he slumbers, perhaps the fulfillment of the first verse of the augury of the Drakestone Prophecy.

The final tome in the Rings of Silver trilogy, Daemon Glaive brings together all the history of Arcana and the mystery of Drakespawn, the previous titles in the series, to an enthralling and thrilling conclusion, wherein the fate of Erilan is revealed in the destinies of its villains and heroes.