Descended from the mighty Somerled, Lord of the Isles, Steinar MacDougall's supremacy over the seas is fierce. On a quest for King William, he is captured by the enemy and presented with a favorable opportunity. Yet Steinar soon realizes his greatest threat comes from the woman who hides behind the mask of a warrior, and the quest for control might send them hurdling into the abyss of the sea.

As leader of the Serpents, Inga the Ruthless travels beyond the isles bartering for goods with her brothers. After rescuing the feared Pirate Wolf during a storm, she surrenders her trust to the man and his inner wolf in order to claim the lost treasure of Odin. Though the journey is fraught with dangers, Inga fears her heart might be the one in peril, leading her to make the ultimate sacrifice.

Will the sea be their salvation or doom them to a watery grave?