The squire of Greshamsbury has fallen on hard times, and it is incumbent on his son Frank to make a good marriage. But Frank loves the doctor's niece, Mary Thorne, a girl with no money and mysterious parentage. He faces a terrible dilemma: should he save the estate, or marry the girl he loves? Mary, too, has to battle her feelings, knowing that marrying Frank would ruin his family and fly in the face of his mother's opposition. Her pride is matched by that of her uncle, Dr Thorne, who has to decide whether to reveal a secret that would resolve Frank's difficulty, or to uphold the innate merits of his own family heritage.