It begins when Saki's husband calls and asks her to deliver an important document he forgot. She knows he is working on a publication about rope bondage, but when she nervously arrives at the set, everything is in chaos because the scheduled bondage model has canceled. Shimizu, a master of the art, takes one look at Saki and says rope would suit her beautifully. He asks her to fill in as the model, setting her on a path into hemp-rope restraint, erotic training, and sex shaped by overwhelming pleasure.