Mateo Melgarejo is a notary public and scribe for the illiterate people of Santo Domingo, a neighborhood north of Mexico City's Zócalo. A squatter friend asks for his help in negotiating with the land census bureau to regularize a land title. After a great deal of frustration with the government bureaucracy, he writes a letter to the cabinet minister, earning an audience with him. The minister hires Melgarejo to reform the bureau, and the appointee proceeds to lecture the officials on their duties in a democratic society. At the end, he gives up the post, returning to Santo Domingo to help its poor residents.
Rene Cardona directs the film version of Jose Leon Sanchez's best-selling novel, which relates the author's 20 years of imprisonment on an island ruled by brutality. When a sadistic man declares himself the boss of an island pueblo, an innocent husband and wife become the victims of his selfish rule. Once the evil man's deeds reach the authorities on the mainland, however, he sinks further into madness and declares "his" island its own republic.
Rich man who owns an island sanctuary is involved in some shady business. Meanwhile, his daughter... and also meanwhile, the tribe of hippies that are racing around on dune buggies...
A newlywed couple find themselves broke when the woman's father dies deeply in debt. Forced to sell their belongings, they move into a rundown house from which they get very bad vibes. It's not long before some very strange and disturbing people begin showing up at the house.