0-Jigen no Oka

A young elementary student named Toshio Yamagata cries whenever he hears the record "The Swan of Tuonela," visualizing a landscape with a large tree and a white wall, which he believes to be his hometown. His older brother investigates and finds that the scene matches a village in Vietnam called Lien Tao. It is also discovered that four other children from different countries have had similar experiences. The five children are brought together in Vietnam to uncover the mystery, eventually learning a surprising truth.