Would you sacrifice your life for the enemy? Based on actual events, Guarding Charlie is the tale of 3 Marines that stood watch over a valuable North Vietnamese officer who voluntarily surrendered bringing valuable intelligence on the eve of a massive onslaught by the North Vietnamese. This event, January 20, 1968, and those that followed, were the beginning of the seventy-seven day Siege of Khe Sanh, a taxing and costly turning point in the American War in Vietnam.