It s the start of the 1860s, and the Old West is changing a change that comes as a shock to the Daltons when they re arrested not by Lucky Luke, but by Allan Pinkerton! The man is determined to turn bandit-hunting into a modern, rational business even at the cost of the American people s personal freedom. It ll be up to Lucky Luke to ensure that the USA is protected against all evil-doers, rascals and lawmen alike