A portrait of the construction workers involved in building the second deck of Mexico City's Periferico freeway.

As every year, the Los Pinos school, a prestigious school of the confessional type, sends its students on retreat to the countryside. Under the watchful eye of teachers and priests, the children are led on the path of their physical and moral development. Through the gaze of several middle and upper class teenagers, the film shows how their upbringing affects the future of society itself.