Donnchadh and Gwalcmai, two powerful human's from across the galaxy who led a revolt against the immortal Airlia, head to Earth on a mission to once again stop ... » 

Donnchadh and Gwalcmai, two powerful human's from across the galaxy who led a revolt against the immortal Airlia, head to Earth on a mission to once again stop the Airlia, who have seized power in the land of Atlantis, as they guard the mystical sword known as Excalibur through the centuries in prep «