After mistakenly going to jail, Maria makes friends with a woman whose kids live in the streets and Maria gets the idea to help them.
Bellas de noche continues. The ex-fichera who bought the cabaret continues to work with several of her former companions, the waiter Fabian, the pugilist Bronco who returns to boxing, Carmen, his wife, who returns to booking, the drunk “La Corcholata”, in love with an old man, and a French woman and the pimp “El Vaselinas”, whose favors are disputed by all the women, but who loses his virility and fights to regain it.
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.
A commanding friend Pepito and Chabelo ask them to help uncover a gang who kidnaps children. They accept and are out to steal to join the band. Whenthey find that the band mesmerizes children with toys and then the kids are controlled by young boys and they controlled in turn by strangers with long hair and blue eyes.
Small-time crook teams up with a street urchin for mutual support on the margins of society.
Blue Demon returns in one of his best adventures like Agent Zero, who this time is facing a criminal organization that attempts to poison the world with a deadly gas (whose formula is unknown). This time, Zero (Blue Demon) is the only one qualified to investigate and prevent Hans plans, the evil leader of the organization.