On his way to China, where he is to meet a longtime lost cousin, Kim, a filmmaker, meets a young woman, Young-hwa. When he meets her a second time in a hotel, he decides to follow her until Tae-bak, where she meets up with her sister.
With the help of his family and a coach, an autistic man trains and competes in a lengthy marathon. The young man had always dreamed of competing in an event like that.