A single mother, Etsuko works at a design firm and has to visit artist Nobuhiro Shimazaki at his studio. Nobuhiro addresses Etsuko as "Etchan," a form of endearment, as if he'd known her for a long time. Nobuhiro tells her that he wants to do a painting of her. Etsuko obliges reluctantly, and thus begins her daily visits to the artist's studio. One day, she learns from the police that Nobuhiro has died a mysterious death. Nobuhiro's time of death is a matter of consternation for Etsuko because she had been with him at that time. In order to solve the mystery, Etsuko sneaks into Nobuhiro's locked studio. She is shocked to find the chilling truth linking her to Nobuhiro.