Hoppy and Lucky deliver cattle to Valdez in Argentina. Merritt is after Valdez's ranch and has his son and daughter killed, supposedly in an accident. Examining the bullet, Hoppy suspects murder. Hoppy then remembers Merritt and finds his picture on an old USA wanted poster.
Law of the Pampas
Hoppy and Lucky are headed to South America to deliver a herd of cattle. Bad guy Ralph Merritt gets in their way. For a while.