On a faraway mountaintop, eight kids with guns watch over a hostage and a conscripted milk cow.
Lucio, a prestigious university professor, takes the position of substitute teacher at a high school in the suburbs of Buenos Aires, where he grew up. Through tales, novels and poetry, he tries to distract his class from the harsh reality of their everyday lives. But soon, he must step out of his professional duties when Dilan, one of his students, is threatened by a local drug kingpin.
Lila, a dedicated cleaning staff employee, runs an unofficial cafeteria with her friend Marcela. When she is officially promoted to direct it, tensions arise with Marcela that upset the delicate balance of the office after 30 years of camaraderie.
