Sinopsis momentánea en inglés: Trainee designer Kasumi has married her employer in Tokyo, the manager of a design workshop, and has had a two-year affair with one of his clients. She and her unsuspecting husband are vacationing in Hokkaido with her ex-lover and his wife when their five-year old daughter Yuka disappears without a trace. Distraught, Kasumi clings to the idea that Yuka is somewhere alive and safe. She returns to the spot every year, hoping to find a clue. Meanwhile her marriage nearly collapses, and her ex-lover's marriage does collapse. On her fifth visit to Hokkaido, she is shadowed by Utsumi, a detective who has his own ominous reasons for wanting to be involved...