A passenger liner runs aground on the muddy banks of the Río de la Plata. One by one, its passengers are abducted by Buenos Aires' criminal classes.

As the kidnapping of three foreign businessmen sends stock markets into freefall, the job of solving the chaos falls onto the weary shoulders of Deputy Inspector Walter Carroza of the serious-crime squad.

But top of his agenda is former Miss Bolivia Ana Torrente. Why are the bodies of the men who try to take her to bed always found minus a head?