A high school couple on their way home was invited to a special magic mirror studio where the boyfriend couldn't see anything. The girlfriend, a high school girl, was challenged to solve the troubles of an ordinary black man. Despite her shock at her first encounter with a black man's large penis, she hesitantly accepts the live insertion for the troubled black man's sake. She forgets her boyfriend as she experiences the intense pleasure of long-stroke piston movements, truly climaxing. The two, who would never have crossed paths in their lives, have continuous unprotected sex right in front of the boyfriend.