Futurus Rex (Unabridged‪)‬

In this, the last published work co-written by the late Star Trek writer/Icon D.C. Fontana, we are in a far-future Britain, a wasteland after an ancient, devastating war. 

In a hidden cave, long-dormant activating mechanisms come alive on a high tech sarcophagus awakening a strong male, battle-scarred body. The denizens of outposts along primitive trading routes struggle to survive and grow under medieval conditions and the harsh rule of the Grand Techno-Wizard Karayahn and her mutant Garrum guards but her electronic devices and weaponry are beginning to fail. She covets the vast source of power inside The Enchantment, a hidden land whose invisible portals are difficult to find and breach.

One popular young songsayer, Aliena, will lead a band of misfits against the oppressors but she needs a strong battle leader and the man from the cave is destined to be that person for he is Arthur, the once and future king. Per legend, he, with his faithful knights, who rest by his side, will come forth to save his kingdom in its hour of need. Unfortunately, the only knight to survive the long sleep is his traitorous nephew Modred.