Faced with the loss of sponsors on the radio, René and Walter decide to take their program on UFOs to TV. Fate seems to accompany them, and that day one falls in the Esteros del Iberá. A TV presenter from the capital joins them in this reckless search.
A farm laborer crosses the mythical nature of the Iberá Wetlands in search of a child he lost in an accident. To find them, he has to embody a hero called "Gauchito Gil", a local Robin Hood, and therefore die like the myth: hanged from his ankles.
The murder of Julio Ernesto occurs under strange conditions. A police investigation begins that will try to determine if the crime was the product of the manifestation of the legend of the "Black Spirit", or was the alibi of the group of witnesses.
