1877: Dull, a young Cheyenne warrior, wants to avenge his massacred tribe. He roams the Wild West with his mentor, Oscar Carjat, a traveling photographer, working for the local authorities in every town they come to, follow the outlaws' trail and collecting statements that help Dull capture, in a few pencil strokes, the composite images that adorn the famous "Wanted" posters.
But with that pencil, Dull also wields a very strange power, inherited from his ancestors...