Prosecutor Alberto Nisman was investigating the responsibility of the Argentine government and Iranian officials in the attempt against the Argentine Israeli Mutual Society (AMIA) when, hours before presenting the evidence of that pact, he was found dead.

1954, in the small mountain town of Colombia, Alfonso, an 11-year old boy whose mother passed away, doesn't have any family and to survive has no other recourse than to leave school and begin working as errand boy at a local pharmacy. There he learns all of the basic concepts of medicine, which changes his life in spectacular fashion.