Bound by religious fervor, a chaste brother and sister are forced into a deviant ritual. Their father, a high priest, commands, "Prove your devotion." The siblings, clothed only in thin, white garments, are made to face each other, their bodies pressed together. As their breathing quickens, so does their arousal, visible through the sheer fabric. The sister, eyes wide with shame and desire, feels her brother's hardness against her thigh. Their father watches, unmoving, as the siblings struggle with their lustful urges, their bodies betraying their sacred vows.