Ireland 1014. The High King, Brian Boru, has just announced his divorce from his third wife, Gormflaith. Intent on seeking revenge for her removal, she goes to her brother Máel Mórda, King of Leinster, for help. But Leinster does not have enough resources on its own to go against the High King and his other Irish allies. The call for assistance must travel across the Irish Sea by way of Gormflaith's son, Sigtrygg Silkbeard. A known warlord in his own right, Silkbeard is the King of Dublin, and highly influential amongst the Vikings who rule the Scottish Isles of Orkney. To cement an alliance Silkbeard uses the finer talents of his wife Sláine, the daughter of the High King he's trying to overthrow. Little does he know, his wife is playing a game of politics of her own, unwilling to go against her father and his allies. Full well knowing that Brian Boru took his kingdom by force in 1002, it will take an overwhelming alliance to overthrow him now. Sigurd the Stout, Jarl of Orkney, will only join forces with the Kingdoms of Leinster and Dublin on the condition the warriors from the Isle of Man help them. Specifically, a warring pair of brothers known for their successful conquests. But seeds of doubt from the gods get in the way while preparations for war are made. The High King will not go down without a formidable fight. Playing with religious superstitions, who will hold the crown of Ireland when the sun sets on Good Friday?