The Sterile Queen Aveliene, the most feared of the legendary Wraithkillers, has been sent by her step-mother, the Eternal Elba, to look into rumors that the black unicorn has returned. After over a century of war, the Six Worlds lie in ruins, and an ill omen like the black unicorn appearing could mean that the troubles are still not over.

A story set in the Six Worlds of Shtar, it takes place during the same time period as Echoes of War, but is a complete, stand-alone work.