The filmmaker and four friends set out on a 12,000- mile journey along the U.S.-Mexico border and the Rio Grande. As the border wall construction has become a real issue in the Trump era, the wall’s impact on the eco-system has become an unavoidable question for environmentalists. The group of 5 travels through the border on bike, Mustang and canoe. Carefully prepared political questions are raised against a backdrop of breathtaking scenery captured on camera. Is it possible to build a human-made wall across this beautiful and great nature? Can problems be solved with a wall? (MAENG Soo-jin)