From New York Harbor to the battlefields of France, relive World War One through the eyes of an unknown soldier, as told through his diary. See how the 100-year-old diary brings a father and his estranged son back together by retracing his experiences fighting in the battlefields of France in 1917 -1918 to his final resting place—the Tomb of the Unknown Soldier at Arlington National Cemetery.

His diary was found next to his lifeless body by a young French girl who witnessed his death and bravery as he tried to protect his fellow soldiers. How the unknown soldier felt and what he experienced fighting on the Western Front in World War One —his day-to-day struggles and life as a private and then as an NCO. As he led his men into combat.

The pride and fear he felt and the overwhelming stress he encountered, sometimes frozen with fear from the sheer brutality of modern warfare from all sides. His bravery in combat and leadership in training and on the battlefield. How he coped as he watched his fellow soldiers, battle buddies, and friends die one after another. Some from battlefield injuries from conventional weapons and gas attacks, but also diseases from the unsanitary conditions of trench warfare and influenza. His only wish was to come out alive, a wish that would never come true.

But return home, he did.