Seven years of marriage... Nana and her husband, Toru, have a ``relationship that does not bind each other.'' - Their relationship begins to fall apart when Nana starts working at an art school. - Nana is asked to become a nude model for Kozuka, a talented student. - A few days later, Kozuka sees through Nana's ``desire to be bound'' deep within her heart and ends up tying her up with a rope. - The moment the rope digs into Nana's white, transparent skin, a feeling she's never felt before starts to grow within her...