Duke was a black and white mongrel who belonged to a crooked gambler. Though he served his master faithfully, the only thanks he ever received were kicks and brutal blows from the gambler's malacca cane. One night, his master was caught cheating in a card game, and in the fight that followed, both he and Duke were savagely beaten by the gambler's intended victims. Later, after he had been thrown out of the establishment, he turned on Duke and began to beat him mercilessly as if the poor dog were to blame...