The story of Arthur's desperate attempt to triumph over a ruined marriage and the Saxons' determination to destroy him. This is the tale not only of a broken love remade, but also of enemies more deadly than any Saxon spearman - of forces both earthly and unearthly that threaten everything Arthur stands for. When Merlin and Nimue embark on a dangerous quest to summon the gods back to Britain, they unleash forces that will lead to a last desperate battle on the sands of Camlann, where it seems Arthur must fail unless Merlin's final enchantment can avert the horror.