After the Khmer Rouge took over Cambodia in 1975, 9-year-old Arn Chorn-Pond was thrust into the darkness of Cambodia's Killing Fields. For four years, Arn's musical talent kept him from perishing in a genocide that took the lives of 2 million Cambodians. Now, after living in the United States for 20 years, Arn faces the dark shadows of his war-torn past as he fights to save Cambodia's once-outlawed traditional music from extinction.