During the day we see many people, things, and works. They seem usual and familiar, but they are rather unknown. We know just what is in contact with the interests and the life of each one of us. The rest is strange. Who are the street cleaners and how they live, these humble and silent workers who nobody talks to or looks at, they seem not to be of our interest. The street cleaners are part of the city as something inanimate. But nobody like them participates in the city life. How does it appear to them…? They have been working for a while when the city wakes up.