Every summer, in an isolated Japanese village, a celebration known as the Festival of Shadows takes place. The villagers are entrusted to assist the troubled souls or "shadows" of those who died tragically, and to help them come to terms with their deaths and find eternal peace. Naoko, a young girl born in the village, is given a year to save the soul of a mysterious young man. She develops strong feelings for her shadow-a handsome young man, an artist-but he seems haunted by a terrible secret. She has a year to find out what happened to him, to help him come to terms with his past, and if she fails, his soul will be lost forever. As the year goes by, Naoko finds herself teetering between the worlds of the living and the dead. What is the terrible secret that seems to be haunting her shadow? And could she be risking her own life to help someone who has already lost his?