A group of juvenile delinquents live a violent life in the infamous slums of Mexico City; among them Pedro, whose morality is gradually corrupted and destroyed by the others.
After hiding a murderer, a Catholic priest is forced into self-exile and decides to embark on a pilgrimage through the Mexican countryside.
A tough young man, who helps to kick poor people out of their houses, falls in love with a girl. She lives with her father in the building about to be demolished.