同名書籍を原作に、日中戦争末期、ソ満国境に置き去りにされた新京一中の130名の15歳の少年たちが、ソ連軍の捕虜となり、後に釈放され自力で新京に辿り着くまでの実体験と、3.11後、仮設住宅で暮らす現代の中学生を交差させた感動的な作品です。Keisuke, 15-year-old junior-high school boy, has been forced to live as refugees with his family in temporary housing apart from a hometown as a result of the Great East Japan Earthquake.In 2012, he belongs to a broadcasting club of his junior-high, to which he has to be admitted for the earthquake. He spends time with some fellows of a club. But all equipment to make their works of it has been washed away by the tsunami. He decides to give up his filmmaking in this summer, which will be the last time of his junior-high days to make a work.But one day a man who lives in a small village in Heilongjiang, China donates the equipment for filmmaking to Keisuke's school. Also Keisuke, his fellows and his teacher have been invited by him to shoot a film in China. And they are travelling to shoot around the boundless Chinese land. Then they have known the Japanese boys' story in China in the end of the Second Sino-Japanese war. It is a true story that 120 Japanese junior-high students were ...