Mexican legend tells that for every bridge that is built the devil will ask for one soul, so that the bridge never falls. This film tells the story of the workers involved in the construction of a second deck to Mexico City’s inner Periferico freeway. This second deck is about to transform the city, its landscape, and the lives of its inhabitants. It is the story of the people whose hands and sweat go into the making of this mammoth work of concrete, steel and asphalt. The workers' daily lives, their hopes, their dreams and the dignity that helps them survive. Contrasts, emotions and small moments that culminate in the loss of a soul. A soul that will remain as a memory of the workers who built the second deck.