Five years into their marriage, a couple reaches a plateau of boredom, and the husband gradually begins to act on his desire to have another man take his wife. Initially hesitant, the wife soon finds herself completely dominated—mind and body—by intensely stimulating sex. Her sensitive, exquisite body climaxes repeatedly, driven to the point of losing control and involuntarily urinating from sheer ecstasy. The once demure wife slowly transforms into an insatiable, lustful woman.