General Alexander's army is almost ready to go on the offensive, he only misses the arrival of fresh horses for Captain Stark's 22nd cavalry. Which should be settled shortly since Blutch and Chesterfield went to pick up these horses at the corner station. But what is not their surprise to see Blutch and Chesterfield disembark not with a herd of horses in full health, but with a dromedary, two mules and a heart horse! Stables fund what! Alexander, for whom it is inconceivable to launch the battle without his cavalry despite they are far superior in number, will send Blutch and Chesterfield to recover wild horses further west into the rocky mountains. To do this, they will be accompanied by Bronco Benny, the greatest horse trainer of the Far West!