My father, a veterinarian, has remarried, and I now live with my stepmother and sister-in-law. One day, he receives an attaché case from his father, who is working overseas for drug research. This is a domestic PTM work (a play in which the dick inserted into the pussy is sucked and cleaned, then the dick is inserted into the pussy again and again). The super lewd sex between these two people is a must-see!