The son-in-law is captivated by the sensuality of his mother-in-law, who works at the same workplace, and indulges in obscene fantasies while at work! Whether he knows his son-in-law's feelings or not, his mother-in-law is also... in the empty office. Even while at work, he enjoys office fucking with his serious mother-in-law! Not content with just an affair at work, he goes home and cums inside her in her bedroom!