On Sunday a group of people who had committed traffic offenses the week before, are made to attend a lecture. Some of them are offended and insist that they had not done anything wrong. The young instructor calmly reminds them of their actions. The car driver had driven too fast and began to overtake without signalling. He had thus endangered the car behind him. An older woman had been chatting to her friend almost in the middle of the road. She dodged an on-coming car and leapt onto the pavement but then returned to fetch her forgotten bag. The approaching ambulance had to brake sharply, threatening the life of the patient inside. A villager, smiling in his embarrassment, recalls a situation where he was leading a cart pulled by horses and, since he was feeling drowsy even while walking, he found himself walking into on-coming traffic and only just avoided an accident with a car coming in the opposite direction. A cyclist is told to equip his bike with brakes and a light. The worst danger behind the wheel is alcohol. The young men offering drink to the driver of their bus almost paid for their carelessness with their lives.
The film was made for the Ministry of the Interior of the Czechoslovak Republic.