More than 65 million people around the world have been forced from their homes to flee the displacement since World War II, famine, climate war and change. Film-maker Ai Wei Wei examines the staggering scale of its own effect that is profoundly personal and the refugee catastrophe. Over the course of one year in 23 countries, Wei Wei follows a chain of stories that are barbarous which stretch across the planet, including Afghanistan, France, Greece, Germany and Iraq.