在地下世界，我们寻觅隐藏的秘密。真精华布衣正版天下图

　　A documentary about the underground structures scattered around East Asia and their history. Starting from Busan, the film explores Jeju, Okinawa and many other places of painful history in East Asia. As the recent images are overlaid by past voices, unforgettable historical memories are recalled. The lasting underground structures remain as a scar of history.