Guillermo Aguirre

A handsome and mysterious stranger, played by Darío Grandinetti, walks into the town square of Villaserena one day and strategically places loudspeakers around the town, blaring a variety of musical tunes. Soon, he begins to sell airtime to the various locals, who broadcast their own personal love dedications and (more frequently) insults for all to hear. A subplot evolves between Abelardo (the stranger), Celeste (a young woman who is chained inside her father's house to stop her running away), and José (a young man).

The story of the friendship between a truck driver and a shoeshine boy who occasionally becomes his assistant when they travel together from the agro-industrial area of Santa Cruz to the high Andean basin of La Paz in a truck named "Mi Socio".