Ayaka has been married for two years, she always wants to have a child but her husband always refuses to have sex with her. Every night she has to beg him, but he always finds an excuse to get up early to postpone it to another time, and then another time. She feels extremely disappointed and her sexual desire has reached its limit. This time, three foreigners came to work at her husband's company. Her husband is in charge of training and guiding them, and he asks her to teach Japanese to make it easier for them to work. Ayaka accidentally saw a huge black cock inside the pants of one of them, making her feel extremely excited. She used the excuse of dirty pants to clean his cock... with her mouth. In the evening, she sneaked into his room and performed seductive gestures, inviting a lonely black man who couldn't control himself because he was far from home. But that's not all, she wants all three black men to have sex with her in front of her impotent husband to take revenge and arouse her husband's sexual ability...