هنرمند آرشیو فرانکو نرو

Mike fa il cacciatore di squali, ma è un uomo misterioso del cui passato nessuno sa niente, nemmeno la sua donna, Juanita. Poi arriva Acapulco, esperto sub, che fa subito amicizia con lui. Ma la situazione precipita quando si presenta Donovan, accompagnato da Rosy, che in passato ha lavorato con il capitano Gomez per l'Organizzazione. Mike in realtà è l'unico a conoscere la posizione di un aereo inabissatosi con cento milioni di dollari e certo cento milioni di dollari fanno gola a molti, disposti a tutto pur di ottenerli. La caccia è aperta, ma questa volta non agli squali.

A spaghetti western in which three adventurers team up during the Mexican Revolution. Mary O'Donnell, a radical Irish journalist, wants to foment a peasant revolt in Mexico. She enlists the help of a seedy bandit, Lozoya, by saving him from a death sentence in Utah. They meet a man calling himself Prince Dmitri Vassilovich Orlowsky, who claims to be a Russian prince, not to mention a man of the cloth. Wallach pretends to be a Mexican folk hero. The trio crosses the border, the two men seeking a cache of gold while O'Donnell pursues her revolution. Lozoya has the key to the gold, but Nero knows where the other half of the map is.

The tough gun-man Burt Sullivan (Franco Nero) leaves his job as a town sheriff to go to Mexico to find the man, Cisco, who killed his father many years ago. He and his younger brother arrive in a small town where everybody is afraid of Cisco who has become the local landowner. But there is a secret. It turns out that Cisco is the father of Burt's younger brother and Cisco are craving for respect from his "son". Burt Sullivan joins forces with the local townspeople to stop and bring Cisco back to his punishment in Texas.