In 1988, in the final months of the Iran-Iraq War, the Kurdish city of Halabja was devastated in a chemical weapons attack by Saddam Hussein. An estimated 5000 people were killed. Many injured and orphaned children were taken across the border to Iran for treatment - most never saw their families again. Now, almost 30 years later, one of those children makes an emotional return to Halabja to try and find the family she lost.