Chile, early 20th century. José Menéndez, a wealthy landowner, hires three horsemen to mark out the perimeter of his extensive property and open a route to the Atlantic Ocean across vast Patagonia.
Sayen follows a lead to the picturesque desolation of the Atacama Desert. There, she reluctantly teams up with a young Atacameño girl, Quimal, looking to clear her father’s name and save her town from becoming an arid wasteland due to Acteon’s exploitative water usage.