The Invisible Frontier [La frontera invisible]

On an uninhabited island off the Mexican Pacific coast, members of the army do their uneventful duty. The film watches drills and everyday routines, but mainly the breaks which they spend playing board games in the shade of trees, in hammocks, swimming, flying kites or doing karaoke. The peaceful environment, however, does not hide the violent reality of their country which they are always confronted with, even out here.