From the back cover:
Of all the desperate adventures, this is the most desperate - and the most vital. Only two years remain before the year 1000, when the Magi's power will have waxed full and the moment of their reincarnation will be at hand!
All is not lost; if you can recover the fragments of the Blood Sword, the Magi can be opposed. But to do do, you must travel to the land of death...
As you set off on your journey, you know there will be many terros and wonders to be faced. You must penetrate to the very heart of the netherworld and plead your case before Death himself. Can you survive the perils of the Sea of Mists? How will you fare against Typhon the Giant? Can you face the feasting dead? Or track down Entasius the Magician? Can you endure the Doomwalk...?