A French woman stranded in Switzerland during WWII had sought out her father, who had relocated to China, in 1975.She returns 45 years later to search for his other family still there and learn about their own historical suffering.
In 1946, Heidi is entrusted to a Swiss family by her father. He will never come back for her. She goes back to China, in a quest to reconstruct memory. Through contact with her brothers and sister, Heidi measures the extent of the drama experienced by her estranged family.