"The Daltons have escaped!" Words that all fans of Lucky Luke know well. But this is the story of the first time that the idiotic brothers break out of jail. Driven by Joe's unshakable need to get revenge on Lucky Luke, the outlaws terrorise several towns before hatching a genius plan: Get the Lonesome Cowboy his very own wanted poster. As the local populace begins turning on him, Luke will display infinite patience in order to catch his quarry.