In the film "A fuego lento," Guadalupe Palma, a dancer and part-time prostitute, finds herself at the center of a suspenseful and enigmatic story, inadvertently setting off a chaotic pursuit by various factions, including ruthless gangsters. Her impoverished musician boyfriend, Óscar, becomes entangled in the intrigue, resulting in a unique cinematic experience with minimal dialogue.

Héctor and María meet again after eight years of not seeing each other. She works as a magician in cabarets and he robs houses. María convinces Héctor to become a magician and work together. Life seems to smile on them until one day, when Maria travels to another city, the couple's situation will be overshadowed by an unfortunate event.

The sexual misunderstandings caused by the real identity of a rich woman serve Hermosillo to satirize the moral and social hypocrisy of the provincial that every Mexican carries inside.