In the near future, society has been divided into two clearly differentiated and delimited blocks in the space of each of the towns and cities around the world: the rich neighborhood and the poor neighborhood. Carmen is a teenager who lives with her father in an old house in the poor area. The father, due to an accident, lost the ability to walk, a situation that they try to hide from the rest of the people, since the father thinks that if it were known everyone would consider that his daughter is unprotected. Thus, it is Carmen who leaves the house every day to look for work and/or something to eat. Both on her way out and on her way back, Carmen talks with Cloti, the old homeless woman who lives in the small square in front of her house. Cloti helps Carmen as much as she can and gives her the same advice as her father: "never go to the rich neighborhood". Her father's former companions discover her father's invalid state and threaten the teenager. The father kills the two men, but is wounded and dies shortly thereafter. Carmen buries him in the grave in the courtyard. Two policemen arrive at Carmen's house investigating the murder of the father's two companions. They try to rape the young woman and would have succeeded if Cloti had not killed them unceremoniously.

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