Chile's Atacama Desert is the driest place on earth. Atop its mountains, astronomers from all over the world gather to observe the stars. The sky is so translucent that it allows them to see right to the boundaries of the universe.

The Atacama Desert is also a place where the harsh heat of the sun keeps human remains intact: those of Pre-Columbian mummies; 19th century explorers and miners; and the remains of political prisoners, disappeared by the Chilean army after the military coup of September 11, 1973.

So while astronomers examine the most distant and oldest galaxies, at the foot of the mountains, women, surviving relatives of the disappeared whose bodies were dumped here, search, even after twenty-five years, for the remains of their loved ones, to reclaim their families histories.

Gradually the celestial quest of the astronomers and the earthly one of the Chilean women come together.