Sun, Aug 6, 1972
Marta and her boyfriend Rafael have an argument. It's their anniversary and he has a night turn at the asylum where he works as a doctor, so he can't have a date with her. Marta, out of spite, decides to spend the night with her friends at a party. After too many drinks, the group goes on the road to meet with Rafael and give him a surprise. When they start speeding at a zone full of curves, Marta loses control of the car and they have an accident.
Sun, Aug 13, 1972
A woman hears from a friend that she got a second-hand car very cheap and gives her the address to where she bought it. After some struggle, she manages to convince her husband to buy one for her. Days later, guards Teruel and Hernando visit her in plain-clothes to talk to her about her car, but she doesn't trust they're real cops.
Sun, Sep 17, 1972
A drunk driver rolls with his car over a young boy in a motorbike. Thinking him dead, he hides him and the bike away from the road, then runs away. When next day, the body is found, it is discovered the boy was left there alive and he had tried to crawl for help, because he had mud inside his fingernails.
Sun, Oct 8, 1972
Enrique and Carmen return home from having dinner in a restaurant. Carmen has just told him she doesn't want to continue the relationship. Enrique, who has drunk and is nervous over the breakup, is speeding too much. Before he knows it, he rolls over a cyclist. He takes the cyclist to hospital but then tries to hide his implication in the accident, trying to make it pass as if he had just found the cyclist in the middle of the road hit by someone else.
Sun, Oct 15, 1972
Don Ramón is driving to Madrid. When he stops to get some gas, he meets a hitchhiker who asks him to take her to Madrid. They stop to have dinner in a motel and when he drinks too much to drive safely, they both decide to spend the night together at the motel. Next morning, Ramón finds the girl has stolen his car and all his belongings while he was sleeping, leaving him a note where she threatens to write a letter to his wife if he calls the police. What she didn't know is that Don Ramón, despite his age, is still single. So he calls the police and puts the case in hands of the Liutenant, Teruel and Hernando, although having no clothing, he'll have to go through the shame of going all the way to Madrid dressed in his pajama only.
Sun, Nov 5, 1972
Diego has spent a weekend of vacation with his wife and two kids, who are spending the summer at the beach. He has to return to Madrid back to work during the week, but some friends have prepared a special dinner for him. When they're done it's very late and he has to drive all night up to the morning. During all the trip, he keeps fighting sleep the best he can, until he can't control it anymore and falls asleep while driving, something that unleashes tragedy.