After a failed day of hitting on women, he asks his friend to introduce him to his cute, single adult sister, but gets turned down. On the way home he meets a friendly, curvy young adult woman and takes her back to his room. As he undresses her, he realizes she is that very sister, yet neither of them stops. Her brother calls during sex, and she is made to speak to him while being fucked. Suspicious of her strange voice, he hangs up and keeps calling, but they ignore the phone and continue. While the pair are relaxing afterward, a message arrives on the man’s phone.