Four years into marriage, their relationship remains strong as they diligently save up for their dream home. Suddenly, the husband seizes a chance for promotion. Assigned to lead a new project, he decides to boost his subordinates' morale by inviting them over for hospitality at home. This marks the beginning of a master-servant relationship between his underling and his wife, "Yuna." With her drunken husband passed out nearby, she is taken repeatedly with creampie after creampie. Used as a toy and brought to climax with gadgets, Yuna undergoes intense training under the subordinate's control. Eventually, right before her husband's eyes, she orgasms wildly with another man's cock, getting caught up in an NTR threesome. The once-devoted wife revels in humiliation, transforming into a depraved, insatiable woman.