Spirou and Fantasio are in charge of making a report on cowboys. They are commissioned by the newspaper boss... It takes sensational... When they arrive there, they are somewhat disoriented to meet cars and a certain modernism. But America contains scammers of any kind ready to stage a real city like in the days of bandits and cowboys! And here's a new adventure where our two heroes will still surprise us by their vivacity and their courage... The second story tells strange magical facts... The third a story of frog man and bad bandits... And finally, the fourth, entitled: mystery at the border, we tell how a traffic of d的hicoin is interrupted by our two citizens friends...