One throw of the dice - and the young lady Rowena will have to pay for the loss of her frivolous father. The brave girl is taken to his gloomy castle by Sir Gareth of Caerleon, accused by rumor of murder and other dark deeds. The knight had long been waiting for the opportunity to get even with his evil fate. He tries to use young Rowena for these purposes, but finds himself unarmed in the face of the integrity and purity of her nature. Having understood with a loving heart the tragedy of Gareth's past, she returns to him the joy of life, hope and love.