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.

• Ultramar Films
• Estela Inda
• Miguel Inclán
• Alfonso Mejía
• Roberto Cobo
• Alma Delia Fuentes
• Francisco Jambrina
• Jesús García Navarro
• Efraín Arauz