Standing on the cliffs of 12th century Ireland following the disappearance of his twin, Hoyt Mac Cionaoith is visited by the goddess Morrigan and is charged with the ultimate of tasks: saving his and all future worlds. His enemy - the beautiful but deadly vampire queen Lilith - has had over two thousand years' experience in cruelly killing and changing humans into her own kind - including Hoyt's brother, Cian. Now, Hoyt, a sorcerer, must travel across the world and through time to find and train the five others Morrigan has prophesised will join him as a circle and do battle against Lilith's army of vampires. Fate brings him first to Glenna Ward - a modern witch who can make her own kind of magic. Hoyt and Glenna find themselves drawn together, but is their love strong enough to survive not just the battle ahead but the centuries that separate them?