Search for the Sword of Rhiannon

Ancient Mars: a world covered with water, with great cities and bustling quays built on the shores of timeless seas, where a rugged hero armed with a broadsword and limitless courage could seek hidden treasures and defy the gods themselves.

Modern Mars: a dried-up, dying world, where desperate Earthmen compete with the last Martians and other alien races for lost knowledge and hidden power. And sometimes, in very special circumstances, these two worlds collide . . .