After Igernna's revelations, Morganne and Artuìr part ways, with her running to Cornwall and settling at the lands of her father, and the King falling prey to a Pictish ambush. In the midst of his despair, Artuìr allows Myrddin to take the reins of his destiny, and finds himself bound by a treaty he hasn't foreseen, but one that promises to deliver peace into his hands. But dark forces rise behind the scenes and plot against the dream he's shared of a Kingdom of Summer and a land without strife, and before they know it, Artuìr, Morganne and Myrddin find themselves unwitting players in a game none can win.

At the same time, those same forces plot and conspire in modern day Avalon Hall, bringing chaos and turmoil to the lives of Emrys, Yseult, Nora and Aaron...