The film investigates the effects of the massacre, with the story centering on the return of American soldiers Hugh Thompson and Larry Colburn to My Lai on the 30th anniversary of the event.

It garnered director Tran Van Thuy the Best Documentary Prize at the Asia Pacific Film Festival in year 2000.

[2] The film is about the massacre that occurred in Sơn Mỹ on the morning of March 16, 1968, when the US army killed 504 civilians within 4 hours.

Boehm returned to Vietnam in an attempt to atone for atrocities committed by the US military against the people of Sơn Mỹ.

On the same day, US Ambassador Pete Peterson and former President Bill Clinton apologized to the Vietnamese people for this massacre.