The plot mainly takes place on a train from the west coast of the United States to Chicago. George Kerway, a young publisher, hit it off with the secretary of art connoisseur Xerina. While the two were affectionate, their body was thrown out of the window. George was involved in the pursuit of the murderer. While lurking on the train, the federal secret agent Shi Wei knew the truth about the killing of Professor Wei, and he was also killed by the powerful Roger. The snowball was getting bigger and bigger, and finally the out-of-control locomotive crashed into the railway station. Director Arthur Shearer shot a compact and neat atmosphere, and the best part rose again and again, and the train catastrophe that ended was a stunning stunt scene two decades ago.