An aging, Argentine, Serge Gainsbourg wannabe struggles to deal with a career he can't seem to get on track, an affair he doesn't want, and a crime he didn't mean to commit.

Buenos Aires, Argentina. Sebastián, a successful lawyer, leaves his ex-wife's condo, located on the seventh floor of an apartment building, to take his two children to school. While they run down the stairs, he uses the elevator. Once on the ground floor, Sebastián awaits the arrival of the children.

Carmen and Elena Iturrioz are sisters and partners in a laboratory inherited from their parents. Both carry out the cases that reach the laboratory, together with a team of collaborators. Each episode will stage a new story that arrives at the laboratory at the hands of characters seeking to find out their identity, recognize a son or a brother, gain access to an inheritance or identify a genetic disease, among others. they will reveal who they are; they will get closer to their own personal and family identity.

A teaching assistant at a private Buenos Aires school begins obsessively spying on her students in the early 1980s, as the public rises up against the military dictatorship.