In this taboo tale, siblings S. and A. find themselves alone, their religious upbringing struggling against their burgeoning desires. S., a devout yet curious soul, catches A. masturbating in the bathroom, his cock thick and evident in the steamy mirror reflection. They clash, their voices raised, before retreating to their separate corners to stew in their longing. Later, they confess their lust, A. stripping bare to reveal his massive, throbbing cock. S. can't resist, dropping to her knees to lick and taste her brother's forbidden fruit, their religious guilt momentarily forgotten in their shared, sinful passion.