Pipo, Pau and Mau, three youngsters who spend their time shooting video pranks, visit a distant town where a beast is attacking its residents. Upon arrival, the pranksters will discover that the beast is very different than they thought.

Paraguay, 1933. A woman is waiting for her husband to return from war when she's disturbed by a strange whistle that warns of the arrival of a famous Paraguayan myth: El Pombero.