Philip Eaton is a passenger in a Pullman sleeping car headed to Chicago. However, he's not quite what he seems to be--he's actually Hugh Overton, who has just escaped from prison to clear himself after having been falsely convicted of murdering Matthew Latrone, a corrupt financier who cheated Hugh's mother out of her estate. It turns out that Latrone is still alive and sends out a killer to eliminate Hugh. Complications ensue.