A new school year begins at the High School Argentina (HSA), and the students return from the summer vacations. Fer, the captain of the school rugby team, the Jaguars, discovers that Agus, his neighbour and classmate, has changed a lot over the summer. Delfi, however, continues being vain and wastes her time dominating her poor brother, Walter, and her associates Alicia, Clara and Valeria, or, as she prefers to call them, "The Invisibles".

Thirty years after living in Spain, Paco returns to Argentina to sponsor the wedding of a friend. Retired and separated from his Spanish wife, he is reunited with his affections. As always, in the last thirty years, Margarita, and retired as a teacher, life creeps forward. In the wedding party, best man and Paco Margarita like in charge of catering, intersect again but not found, until he discovers a video of the party. Love truncated by the absence and her refusal to answer his letters, reborn in a search for lost time.