Across the chessboard of Europe, from the German plains to the flourishing Dutch cities and down to Venice, the gateway to the East, our hero, a 'Survivor', a radical Protestant Anabaptist who goes under many names, and his enemy, a loyal papal spy and heretic hunter known mysteriously as "Q" play a game in which no moves are forbidden and the true size of the stakes remain hidden until the end. What begins as a personal struggle to reveal each other's identity becomes a mission that can only end in death.