John Gray, a naturalist, and his pretty daughter, Bessie, live near the jungle where Gray pursues his studies in natural history. George Graham and his son Ralph are hunters of big game and they are encamped near the Gray home. Gray leaves for the heart of the jungle to inspect some monkey traps. He falls from a tree and is badly injured. Bessie, left alone, is attacked by Jan, a servant, whose attentions are interrupted by Graham and his son. Alarmed by Gray's absence, Ralph goes in search of him. Gray has been taken by the natives to a lonely African village where he is later found by Ralph. Graham has remained behind to guard Bessie against Jan. Jan assaults Graham, and in the terrific struggle that ensues, Graham is almost overcome by the servant when Bessie releases a ferocious leopard, which leaps into the room during the struggle and fastens its claws and teeth into the body of Jan. When Ralph returns with Bessie's father, Jan's misdeeds are related and he is discharged. Then the acquaintanceship of Ralph and Bessie ripens into love.
—Moving Picture World synopsis