Graf Bobby and Baron Mucki founded the detective bureau Pfiff and Greif to finally make money. Shortly before the bankruptcy of their company, they receive a lucrative order from Benevenuto Socrates Socre regarding a gang of girl traders.

Count Bobby assumes the identity and dresses of his sick aunt because they desperately need the money for chaperoning Mary, a wealthy American heiress, on her trip through Europe. Bobby falls in love with Mary, but his dress is a handicap.

An Austrian earl learns that he has inherited land in Arizona, in the American wild west. The count and his friend journey to America to claim the inheritance. There, they encounter danger, desperados, and the none-too-friendly daughter of the local sheriff.