A young man from Lima arrives as a tourist in a town in Huaraz. His intention is to climb the Alpamayo mountain. The community is shaken by violence, both from terrorism and its repressive aftermath. As a way of explaining this difficult situation, the inhabitants of the place appeal to their myths, one of which is that of the pisbacos, white men who extract human fat to exploit it outside the country. These mythological killers seek to take the vital and cultural wealth of the Andes to the big city. After being pursued, the truth is revealed and the young man learns to respect the way of life and the culture of the Andean environment.