As the Kingdom of Atlantis is extinguished forever, three ships emerge to bear King Avallach and his daughter Charis to the Isle of Glass, where Celtic chieftans struggle for survival—and power—as the last vestiges of Rome’s power dwindle.

In this myth-born land, one heroic figure towers over all, the Prince Taliesin. Together with Princess Charis, Taliesin will spawn the Kingdom of Summer, a kingdom of Legend, of Merlin and of Arthur . . .