Having spent his youth without the company of human beings save his reclusive grandfather, Rowan is lost and alone. When his only connection to the outside world succumbs to the bitter cold of the Welsh winter, Rowan becomes fearful of the world that lies beyond his woodland life and retreats into a fantasy world formed by his grandfather's half remembered stories of Celtic folklore.
In that shadowy world of old gods and wild hunts, the divide between man and beast becomes uncertain and the whispering of nature promises dark secrets. With the guidance of a hunting hawk, Rowan leaves behind the life of men and fashions himself into the greatest predator of all.
With only a wild animal for company, Rowan's growth into manhood becomes a rapid descent into obsession and madness where the only joy is in the hunt and the hunger for prey is never-ending.