In a clinical setting, a stern mistress puts her new slave through his paces, teaching him the art of pleasuring a woman while denying him his own release. The room is filled with the scent of leather and sex as she commands him to lick her pussy, his tongue exploring her folds with increasing urgency. She grinds against his face, her juices coating his chin, before pushing him to his knees and forcing him to watch as another man takes his place, fucking her hard and deep until she screams in orgasm. The slave's cock throbs in his pants, but he knows better than to disobey, his training in full swing.