Vivian, an heiress, is persecuted by her fiendish uncle, who is anxious to gain possession of her wealth. She writes to Sherlock Doyle, the famous detective, asking him to protect her. Doyle goes to her mansion. The uncle and the butler, his accomplice, decide to kidnap Vivian at once. They take her to an underground cellar, with Doyle in pursuit. They tie her to a post and light the fuse to a bomb. Doyle is just in time to pick the sputtering bomb up and hurl it through a window. The pair then escape. Doyle later leaves the girl for a while. She is captured by some circus Indians and forced to don their costume. Doyle also disguises as an Indian and effects her complete rescue. Numerous thrilling adventures overtake the fair Vivian, but Doyle arrives in the nick of time, utterly putting to rout the base conspirators. Doyle wins the heart and hand of the fair and wealthy Vivian.
—Moving Picture World synopsis