Film based on the life of Dr. Salvador Mazza, who, with a group of professionals, conducts an investigation to discover the antidote to a mysterious illness whose carrier is a nocturnal insect. A Mazza was regarded as the first doctor who fought the deadly Chagas disease in Argentina.

A couple married for 25 years decides to split. Adapting to the new life will be very difficult.

Tells the hectic life of four residents of the same building in a neighborhood of Buenos Aires.