Roberto and Lucia, a young couple, are excited about moving into a middle-class building in a big city. On their first day nothing goes as they thought it would.
Roberto and Lucía are already installed and are about to do some renovations in the apartment. The noise caused by the workers bothers all the neighbors, who decide to make a formal complaint to Juan, the President of the owner's community.
Juan ends up resigning from his position as President of the owner's community, so Lucía takes over. In her first days as President, she discovers that everything is a mess and that in order to fix things, the monthly fee has to be raised.
There is a rumor in the community that Alicia and Belén are prostitutes. This provokes various reactions in the neighborhood, which mobilizes massively to check if it is true.
Someone leaves a baby abandoned in the building's doorway, causing some neighbors with a mother's vocation to dispute it. Roberto befriends José Miguel despite their age difference, neglecting his relationship with Lucía.
Mauri slips and falls down the stairs of the building and has to wear a leg cast. Fernando talks to Juan Cuesta to get him to inform the insurance company and pay for the expenses... but it turns out that they haven't paid for three years.
