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.
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.
