The Chemos and the Pachecos are two gangs whose adventures are witnessed by the doctor, the assistant and the social worker of a clinic where they know of the young men's problems.

• Cinematográfica Sol S.A.
• Películas Rodríguez
• Carmen Salinas
• Gilberto Trujillo
• Alma Delfina
• Fernando Manzano
• María José Garrido
• Víctor Lozoya
• Andrés Valdéz
• Israel Leguizano