Fearing lest Cameron's horse beat the pony he has plunged on, Tony Dorgan orders one of his men to bribe the stableman to drug the animal. Saratoga Johnny tries to carry out Tony's order, but receives a beating at the hands of the irate Cameron employee.

Hume and Frintz, while riding in a boxcar, see a trunk in the unguarded baggage car of a passenger train. By a daring leap from the freight to the passenger, Hume steals the trunk, throws it into one of the boxcars, and then leaps back. The trunk is missed and the loss reported from Helen's station.

Dawson, a newcomer to the division, meets Helen while the girl is riding in the freight engine with Star, his engineer. Helen ignores the fireman's offensive stares, knowing that trouble would instantly result, if she reported the matter to Star. The following day, Dawson approaches the girl telegrapher and, seizing her in his arms, kisses her.

After robbing the bank at Orlock, Cherry and Newton make their getaway. When on the outskirts of Lone Point, the men cut the telephone wires. Helen, however, learns of the robbery. Never suspecting that the crooks are headed for the station, the girl is taken by surprise when Newton and his pal hold her up.

When informed by Helen that the rival railroad proposes to cross the Salt Lake's tracks, McKay, Division Superintendent, rushes a guard of men to Lone Point. This temporarily blocks the rival road's plan, but only until its force of men has been strengthened.

A warm friendship springs up between Quirkly and Helen, when the fireman saves the girl's life. In his desire to be near Helen, Quirkly obtains a room in the house where the girl telegrapher boards. Badger, a crook, stopping in the same house, learns that Quirkly is in the habit of carrying his savings in a bag suspended from his neck. Entering the room with a confederate, Badger chloroforms the fireman and steals the money. Helen hears the noise of the struggle, but comes too late to apprehend the crooks.

The bad blood existing between Reardon and Haley results in a fight in which Reardon is worsted. Reardon, vowing vengeance, climbs back aboard his engine while Haley resumes his station. The fight is witnessed by a number of railroad men. In climbing back to the water tank, Haley stumbles and falls between the cars.

Under the influence of liquor, Griffin foolishly displays a roll of bills. Wheeler and Walter, yeggmen, see the money and trail the traveler to the station. The men learn the berth he is to occupy. Hastening to a bridge under which the train must pass, they drop to the roof of one of the cars when it appears. Helen, transferred to Burnett, is a passenger on the train. By mistake, Griffin gets into her berth. Because of the man's condition, Helen consents to allow him to keep her berth. The girl takes the one which Griffin's ticket calls for. An hour later, Helen is awakened by a peculiar noise outside the car. Hastily dressing, she sees the window being raised. Wheeler's face appears at the window. The man foils Helen's attempt to shoot him, disarms her and then climbs back to the roof of the car.

Their demand for money having gone unheeded, Garibaldi and his gang wreck Number One. Howard, who attempts to interfere, is battered into insensibility. The criminals then place a note in the man's pocket warning the railroad officials to heed their demands in the future.

Wharton, trailing Red Leary and his gang, learns that the men intend to wreck the Limited. Curley, a fireman, is implicated. The crooks become aware of Wharton's presence and attack him. Helen comes to the detective's rescue with a revolver and captures one of the men.