Real-life letters written by American soldiers, sailors, airmen, and Marines during the Vietnam War to their families and friends back home. Archive footage of the war and news coverage thereof augment the first-person "narrative" by men and women who were in the war, some of whom did not survive it.

In the 60s and thanks to the epistolary exchange, the young filmmaker Manuel Antín and the famous writer Julio Cortázar devised four films. An ocean away, a fruitful collaboration and genuine friendship are born.