He himself and his deeds are an incomprehensible mystery, both for people and for those who own ancient natural magic. Burdened with principles and a code of honor, he is free like the wind, coming and going from this world whenever he wants or when he feels that trouble can be stopped only by once again sacrificing his life to higher powers. He goes by many names: the British called him Arthur, the Vikings called him Sigmund, but Brian Duffy has yet to remember it. In the meantime, a very suspicious warlock finds the old mercenary in Venice and offers to work as a bouncer in his brewery, and at the same time save the mythical king and stop the Turkish invasion at the walls of blessed Vienna.