Norman Brown, a secret service agent, arrives at the Lone Point station and tells Helen, the operator there, that, although Congress has
passed an iron-clad law making it a crime to ship liquor into a dry state, there is a gang of smugglers working in the vicinity and that he is on their track. The baggage man of the freight, in tossing a box out of the baggage car, breaks the box and a cake of paraffin falls out. Helen and Brown find it, and discover liquor concealed inside. Helen finds that the paraffin is consigned to Sam Duvall. When Duvall and three of his confederates come to get the paraffin, Brown places them under arrest. On the way to the police station the smugglers attack Brown. He takes refuge in the box car of a passing freight. Two of the smugglers board the freight after him, lock him in the car and put the brake out of commission. The smugglers are thrown off the train by the brakeman. They join Duvall, and return to get Helen. She escapes and hurries across country to head off the train and save the imprisoned detective. Two of the smugglers have ridden ahead of the train to throw a switch and run it into some "dead" cars. Helen, riding horseback, overtakes the smugglers' wagon as it is moving alongside the train. She rides up alongside, climbs from her horse to the back of one of the horses drawing the wagon, then to the back of the other horse, and then to the train, where she turns the angle cock, enabling the brakes to work just in time to save the train from crashing into the sidetracked box cars. Brown places the smugglers under arrest for the second time.
Moving Picture World, November 17, 1917