The smugglers seem in a fair way to escape on a stolen engine when Helen, unhitching a team from a nearby wagon, races down the road towards the railroad bridge from which a rope is hanging directly over the track. Standing astride the two speeding horses Helen leaps to the rope, and swaying in mid-air makes a perilous drop to the stolen engine as it dashes past.
Helen is enjoying a ride on her horse, "Hazard," after her day's work, when news comes that "Red" Purdy and his aides are escaping after making a big haul. When the automobile in which they are escaping breaks down they take to a handcar. Helen pursues them down the track while the Sheriff and his posse set out to head them off on a short cut.
Steve Nelson, a clever crook, arrives at the little station where Helen is operator. He lives quietly at the village's little boarding house preparing for a coup when Helen receives instructions that lead her to suspect Steve.
Communicating with his pals outside, Daly informs them as to the date upon which he is to be taken from the jail to State's prison. Kling, the head of the gang, arranges to hold up the train carrying Daly and effect the man's rescue.
The shifting of the dynamite contained in a boxcar causes the latter to be cut from the freight and set out as unsafe. While this is being done, the Jones gang waylays Emerick, a cattleman who has just sold a herd of stock. Detectives are sent after the thieves.
Beaten by Dun and Corson, Trent is hurled unconscious to the tracks. Helen, who witnesses the attack, drags Trent from the rails just in time to save him from death beneath the wheels of an oncoming train. When the tramp revives, he accompanies his rescuer back to the station.
Crossed telephone wires enable Helen to overhear a plot between Joe and Bill, escaped convicts, to join a number of Chinese who are being smuggled into the country in a freight train.
Climbing into a cab of a freight engine, Bobbie Layson, the son of a station pulls the throttle open. The alarm goes out and Helen, stationed at Lone Point, is ordered to derail the runaway and thus prevent it from running head-on into the approaching passenger train. Fearing for his son's life, Layson phones Helen
Tony, a half-breed Mexican is kicked from pillar to post, but he grasps a chance for revenge on society when he peers through the station window and sees Helen, the operator at Lone Point, opening the express company bag containing a valuable shipment to a local rancher.
After binding Helen to prevent her from stopping the express train to have it await an armed guard, crooks board the train, disable the messenger and dynamite the safe. Helen later takes a short cut in an auto and overtakes the train, but the crooks leap from the speeding train into her car before she can warn the engineer and train crew.
When the Limited is forced to stop because of an obstruction on the tracks, the passengers alight for a stroll. In the excitement of boarding again one of the passengers loses a handbag containing her jewels and money. Two crooks aboard the train hear of this and at Helen's station they alight.
Apparent carelessness causes Conductor Lawton and his train crew to be laid off for thirty days. A gang of car thieves, pursued by police, jump aboard a freight, and after a stiff combat, succeed in throwing the crew off the speeding train to the ground.
Following the wreck of the pay-car, it is rifled by a band of conspirators. All but one of the band later succeed in making their escape from the town by automobile, but this one is forced to jump aboard a freight train to which is attached the wreck train and huge crane.
Trent returns to the throttle too soon after his recovery from illness. On the following day Ruth, his daughter, and Hume plan to elope. Trent, with a new fireman, is suddenly taken with a weak spell and when the fireman becomes panic-stricken there is a scuffle which ends with the fireman thrown to the ground while the fast freight speeds on.
Circumstances make Helen think that Jack, the engineer and son of the road's auditor, is guilty of the theft of $50 that comes to light through a shortage in her accounts. Gypsy Joe, the real thief, gathers his followers to seek vengeance on the train crew for having thrown him off the train.
Red Stanley's band has successfully robbed the express car and the members are making good their escape when they come upon Helen and her girl chum riding in the woods. The girls are set upon but they succeed by desperate riding in making their escape temporarily and, when danger seems near again, are saved by the approaching railroad detectives searching for the Stanley band. A running fight results in the capture of one of the band, but Stanley and his chief aide escape. Under cover of darkness, as Helen is working alone in the desolate station, the two enter and bind and gag her.
Chilton, a crooked dealer in antiques, decides on a daring scheme to recoup his finances by defrauding the railroad. A car-load of cheap furniture is shipped with a valuation of $40,000 on it. Blanding, the tool of Chilton and his partner, awaits at Lone Point a telegram giving the number of the car.
Helen, station agent and telegraph operator at Lone Point, is in despair over a broken sounder when Morley, who has dropped off a passing freight, offers to fix it for her. Recognizing in him a man whose skill points back to happier days, Helen encourages him to tell her his story, promising to get him the position of relief operator if he cares to accept it. Morley's story takes him back several years to the time when he gave up his position as an operator following the death of his wife. He has never seen his little daughter since turning her over to the care of a rich brother.
Helen, the telegraph operator at the Lone Point Station, shields Miguel, a greaser, under suspicion of having stolen some horses, until the real thieves are caught.
The film is about a woman who experiences frightening visions after visiting an insane asylum where one of the inmates claims to be Count Dracula (here following the Hungarian spelling Drakula). She has trouble determining whether the inmate's visions are real or merely nightmares.