Sayuri, a cleaning staff member supporting her struggling artist husband Atsushi, is asked by her company's president to clean the residence of Tozan Amagi, a legendary master in the Japanese Western-style painting world. As Sayuri begins cleaning under the guidance of his disciple, Amagi becomes intensely captivated by her presence. Suddenly, he asks, "Have you ever worked as a model?" Taken aback, Sayuri hesitates—but agrees to undress in front of him in exchange for his critique of her husband's artwork. At that moment, an unexpected new chapter begins.