A disciple of the defeated sorceress Skade bargains with the Mistress of Death to become the Necrotic Knight. In exchange for the power of living death, he must claim the hammer of the underworld and free the Necromancer from his magical prison. The resurrection of the deathly knight activates an ancient binding spell. The powerful magic compels the Warders to partner with their arch-enemy the Chaotic Order and a mysterious grey-clad healer.

Together they embark on a quest to prevent the recovery of the hammer. Can the adversaries work together to prevent the Necrotic Knight from freeing the Necromancer or will the world be engulfed in a war between the living and the undead?