On the American frontier in the last decades of the 19th century, Billie is a female cowboy who fights a series of bad men in this film serial.
A film buff's obsession with an elusive, possibly nonexistent film spirals into a dangerous descent, blurring the line between reality and madness.
Down and out, Bob, an engineer, drifts into town. His condition excites Helen's sympathy. Using her influence, the girl secures him a position with the railroad. Rankin, Dalmore and Dougherty escape from prison. The men attempt to enter the Hobart Tower, but Helen, seizing a revolver, baffles them.
While Hastings, the engineer of Freight No. 3205 is at lunch- in the Lone Point station, Bobby Heywood, the son of an engineer, climbs into the cab of the engine. Having frequently observed his father start his locomotive, Bobby jerks the throttle open. Helen sees the freight speeding down the track. Remembering that Bobby has been playing about the station, the girl surmises what has occurred.
Brent, the night operator has been knocked unconscious by a piece of lumber projecting from a passing freight, and has been rendered temporarily insane. Meantime, a furious storm arises, a track walker discovers a washout and wires a warning to Helen, who sets the danger signal for the Limited which is due in ten minutes.
A pair of crooks steal a valuable package, hold up the crew of a freight engine, and compel the engineer to aid their escape. Learning this, Helen climbs into the cab of a locomotive standing on a siding and takes up the chase.
Billy Warren, timekeeper on the construction job, arouses the enmity of Brent and Easton when he resents their bullying of the other men. Pay day finds the men celebrating in riotous fashion, and Brent in a crazed moment breaks into the station and attacks Helen. Her cries bring Warren, who trounces the bully.
Helen receives a cypher message about a jewel robbery and trails the yeggmen to their lair. Discovered, Helen is bound and gagged and thrown into a box car, but gets loose, and leaps to the ground from the speeding train. The crooks are captured, Helen's pluck wins Billy's heart, but, as usual, she refuses, with an eye on next week's adventure.
Brandt, a defaulting cashier, hiding in Lone Point in his effort to throw detectives off his track, cuts the wires of Helen's telephone to prevent her from calling for help, binds and gags her, and boards the outgoing Limited. Freed by Detective Sheridan, the two of them get into a gasoline speeder standing on the sidetrack and pursue the Limited.
Blake, a quarrelsome lineman, and a widower with two daughters, is in love with Helen, but she rejects his advances. Helen spies Myra, Blake's three year old daughter, who has ventured onto the tracks of the oncoming Elwood Express, and just in the nick of time, grasps the girl off the tracks, but in so doing, must leap off a trestle into a river thirty feet below
Attempting to prevent an armed robbery in the paymaster's office, Helen is bound and gagged, and the thieves escape on a hand car. With her feet still bound by wire, Helen endeavors to pursue on foot, but stumbles and falls across the rails of the track of an oncoming train.
An action movie serial that premiered in 1924
When Dick, an aeronaut is wrongly accused of shooting Dan, a trouble-making, quarrelsome cowboy, Helen aids his escape on the outgoing Black Diamond Express.
The new superintendent's first order on taking the post eliminates the men whom he terms old, which costs "Pop" Bates his job as Helen's relief operator. His next declaration is that active railroad work is no place for women, and Helen is also dropped from the service. While Helen is breaking the news to Bob Bates, the new superintendent is hustling about the road yard speeding up the work. "Put more snap into your switching," he tells the men. A minute later, while he is making an inspection inside a boxcar with defective air brakes, a switching engine rams the car. The force of the impact, heightened by the recent orders, throws the superintendent to the floor stunned, and starts the car on the down grade. In the few moments it is speeding along the road and there is consternation among the men for a washout down the road means that it is headed to certain destruction.
To prevent a three mile journey around the mountain the telegraph wires at the construction camp have been strung over the precipice from the station on the mountain top. The operator is discharged when the superintendent suspects him of treachery and Helen is transferred to the station. Later, after the former operator has enlisted the aid of crooked brokers to use his knowledge in ruining the value of the road's stock, he receives an opportunity to get revenge on the superintendent.
Through an accomplice the band of conspirators preying on railroads succeed in having the boxcar loaded with auto tires sidetracked at Lone Point instead of being taken on to its rightful destination. They are getting away with the valuable shipment when Helen takes a hand in the affair. While each of the trio carries a load of tires back to the autos which are in a sheltered spot, Helen hurriedly climbs the side of the boxcar and releasing the brakes the car, with its heavy load, starts down grade at great speed.
In the second entry of the popular Hazards of Helen series, Helen, is temporarily assigned as a telegraph operator at Quarry Depot; bad blood springs up between two men who are seeking Helen's favor, but to whom she has remained impartial.
Helen, the telegrapher at Downing Junction, receives word that an engineer has been accidentally shot by a partridge hunter, and the runaway train will collide with the Eastbound Express. Helen jumps onto a nearby standing locomotive, opens it up full throttle, catches up the Express, warns the engineer of the impending danger
Hanging from a rope over the track, the detective seems certain to plunge to death when the oncoming train splits the knot of the rope which has been tied to a rail and slung over the bridge girder. Helen's presence of mind and nerve in swinging out over the river on the other end of the rope and thus balancing the detective until the train has passed prevents the terrible catastrophe. Later, when pursuing the culprits, Helen once more takes her life in her hands by throwing a lasso from the hand car on which they are pursuing the freight over the brake beam, and then crawling hand over hand to the top of the car.
The story is built around the rivalry of two railroads, and the record run that is to decide the awarding of large mail contracts.