A terrible disease is found in a Mexican town. A doctor tries to alert the authorities when he discovers its epidemic nature. No one listen to him and soon after the disease spreads. The government tries to control the information in order to prevent panic.

Mexico is in the midst of Revolution when the protagonist returns after studying in Paris to find his native town in Chihuahua occupied by Francisco Villa’s revolutionary forces. He visits his deserted home and remembers people and events from his adolescence that provide glimpses of pre-Revolutionary society under dictatorship: his uncle, the chief of police; his sister’s involvement with a liberal political association; bathing with the girls from a local brothel; a labor strike that ended in a massacre. Returning to the present he discovers that his father has been assassinated and, in the company of his father’s former servant, joins the revolutionary movement.

"Nuestro Juramento" is the life of the singer, Julio Jaramillo, presented episodically, having as background his childhood, youth, his first loves, the apotheosis of his career and his dramatic end. The musicalization of the film has the singles taken from the singer's original recordings.

A British woman visits her husband at the Mexican mine he is attempting to reopen and discovers that the workers refuse to enter the mine, fearing an ancient curse. The couple enter the mine to prove there is no danger and inadvertently release a demon which possesses people's left hands and forces them to behave in a suitably diabolical manner.

Thousands of peasants are kidnapped by the mafia and are forced to work in marijuana fields. Facing violence, death, & desperately fighting for their lives.

A cocker and his driver were attacked by strangers, but leave unharmed. Jesús denounces the fact to his friend Mario, mayor of San Miguel el Alto.

Gunfighters kill all family members of farmer brothers Mario and Fernando Almada, after the tragic event, they seek revenge.

Lives of the tenants in a shabby-genteel apartment house. Miserly landlord learns valuable life lessons.

After etching their love on a stalk, a boy and girl reunite years later, reigniting their romance amidst the Mexican Revolution.