Paco, the teenage son of a Civil Guard commander in Basque Country, becomes addicted to heroin.
A chronicle of the life of Jaro, the leader of a juvenile delinquent gang, depicting his rise from street urchin to outlaw anti-hero on the way to his inevitable end.
Following the events of El pico, the heroin-addicted Paco faces jail time due to his involvement in a double murder.