Senator Rivers of the State of Missouri comes to the United States Senate, and meets Silas Denman, who has been unsuccessful in the prosecution of the Denman Claim, a relic of the Revolutionary War. Denman's daughter, Mabel, who teaches music, meets Mrs. Hillary, a widow, who aids her in many ways. At Mrs. Hillary's home she meets Count von Strahl, and Armstrong, the Secretary of State, at whose home she is introduced to Senator Rivers. Mabel develops a liking for von Strahl. Her father is excited over the prospect of such valuable aid in getting his claim through, and Rivers makes a powerful speech in its favor, incited by regard for Mabel as well as by the justice of the claim. The Senator is stunned by the remark of Mrs. Hillary that Mabel is engaged to von Strahl, but in order to give her a dowry, redoubles his efforts on the Denman bill. The Senator and Mrs. Hillary are on good terms, and learn that Mrs. Armstrong and von Strahl are planning an elopement. The Senator sends Ling Ching, the Chinese Ambassador, to the Armstrong home to intercept Mrs. Armstrong, and before she can get rid of him, her husband arrives, he having been told that von Strahl's carriage had gone to his house. Senator Rivers turns the tables on von Strahl in a neat way, and hurries back to the Senate. By a neat trick he puts the Denman bill through, but is afraid of Mabel's marriage with the Count, as he knows his character. Developments satisfy Mabel as to the rascality of the Count. She realizes that she is in love with Senator Rivers, who in spite of his age, appeals to every particle of her nature. She appreciates the force of his actions regarding Mrs. Armstrong and Count von Strahl, and at the end the Senator has won the claimant as well as the claim.