An eager submissive finds himself at the mercy of a stern mistress, learning the art of servitude the hard way. The femdom dominatrix relishes in humiliating her new slave, using his vulnerable balls as her personal plaything. She grinds her heels into his sensitive gonads, squeezing and twisting them until he cries out in pain. The mistress, delighted by his agony, pushes him further, demanding he thank her for the lesson in humiliation.