Paco, the teenage son of a Civil Guard commander in Basque Country, becomes addicted to heroin.

José Luis Manzano
as Paco

José Manuel Cervino
as Evaristo Torrecuadrada

Luis Iriondo
as Martín Aramendía

Javier García
as Urko

Enrique San Francisco
as Mikel Orbea

Andrea Albani
as Betty

Queta Ariel
as Eulalia

Marta Molins
as Pilar

Ovidi Montllor
as El cojo

Pedro Nieva Parola
as Teniente Alcántara