Franco and Ciccio are two cousins ​​who, in the old West, have opened a service station, where they carry out the washing and drying of the horses and a bar service for the passing riders. One day a stranger saves them from an attempted robbery against them: the girl introduces herself as Calamity Jane, as well as Franco and Ciccio's aunt.

Franco and Ciccio, two journalists, are sent to Amsterdam to investigate a mysterious murder. After having managed to infiltrate the libertine circles of the city, the two take a compromising photo that will get them into trouble.

The son of Django searches for the murderer of his father and is thereby involved in a war between two factions headed by former acquaintances of his famous parent.

Former racing champion John Lee Scott coaches young driver Dustin Rich. The learn of a new Italian model that can reach 300 kilometers an hour developed by an 80 year old racing expert.

Carroll Baker plays a dual role as translator Julie Harrison and her twin sister Mary. The serpentine plot begins as Julie tells her lawyer Dave Barton that Mary's life is being threatened in London while Julie herself is being stalked by a mysterious stranger in Amsterdam.