Parallel World is a film created over a span of 12 years by director Hsiao Mei-Ling, who previously explored the efforts to maintain family bonds across borders in her 2007 work Somewhere over the Cloud. While her previous film focused on the relationship between her husband living in France and her daughter in Taiwan, this time the central theme revolves around the transformation in the relationship between the director herself and her daughter. Over the course of a three-hour runtime, we witness Elodie, the daughter, growing from a young girl to a teenager finding her identity, and eventually into a young adult contemplating her future. Elodie, who has Asperger's syndrome and displays exceptional creativity, moves to France to receive an appropriate education with her father. While raising Elodie alone in Taiwan and making efforts to overcome her absence through online communication after she leaves for France, director Hsiao Mei-Ling demonstrates an astonishing amount of love and patience. Eventually, they come to accept the natural and poignant fact that Elodie will continue her life even in a world without them. Throughout this 12-year journey, not only Elodie but also the director herself grows into a parent who acknowledges and supports her daughter's uniqueness, preparing her for independence. Parallel World is a deeply touching letter written with profound affection, an essay that reflects upon the process of embracing others' differences as something special.