After finding a vital pass through the Canadian Rockies for the building of the Canadian Pacific Railway, Tom Andrews tells his boss Cornelius Van Horne that he is resigning to marry the girl he loves, Cecille Gautier. From Cecille, Tom learns that fur trader Dirk Rourke fears the coming of the railroad because it threatens his hold on the Indians and other trappers. Tom and Rorke have a bitter fight over Cecille, and Tom asks her to wait for him, as he has to go back and finish his job with the railroad. Aided by Dynamite Dawson, Tom finds evidence of Rourke’s work against the railroad construction and almost loses his life when Rourke fires into some crates of dynamite Tom is unloading. The construction camp’s doctor, Edith Cabot, gives her own blood in a transfusion to save Tom’s life. Cecille, realizing that her father is working with Rourke against the railroad,rides off to warn Tom. Rourke intercepts her and tells her that Tom is in love with the lady doctor, but she bullwhips him and gallops off. Written by Les Adams Tom Andrews is a surveyor and railway construction boss working on laying the Canadian Pacific Railway across Western Canada and through the Rocky Mountains to British Columbia. He’s found a pass through the Rockies and the work is continuing though not everyone thinks the railway is a good idea. Among those who are against the building of the CPR is Dirk Rourke, who runs a number of trading posts that will no longer be needed once civilization comes to the West. Rourke’s confederates are steeling dynamite and are slowing down construction by blasting away at every opportunity. Tom is engaged to a pretty Métis girl, Cecile, whose father is working with O’Rourke., but he’s become attracted to the new female doctor, Edith Cabot, who’s arrived with the hospital car. The final part of O’Rourke’s plan is to stir up the local Indians to keep the railway from being finished.