It is the last day before the beginning of holidays. There is still work to do and much to prepare, so everyone in the city gets up very early. Perhaps, in this way, they can stay away from the Lord of the Trafffic Jams. Have you ever found yourself stuck in the car in the middle of a huge traffic jam? Have you ever wondered how it started? When will it end? If you want to find out, this is your book, as it will reveal to you who, since time immemorial, is responsible for making us waste so many hours stuck inside our cars. We will learn everything about the Lord of the Trafffic Jams: how he lives, what things he likes, how he does his job and where he goes on vacation. But not only that, since we will also discover that, in the bowels of a traffic jam, amazing events take place among the passengers of the cars. Animated by a mischievous sense of humor, this story doesn’t need words, as it unfolds through a sequence of illustrations full of details that, if we pay close attention, will make us laugh and reveal lots of surprises. In 2021, Un Señor Atasco has won the International Illustrated Picture Book Contest of the Insular Library of Gran Canaria.