Ben Time, a locomotive engineer pulls thousands of tons of miscellaneous freight from Indianapolis to Saint Louis day and night. He and his conductor find themselves held out of the St. Louis rail yard for an unusually long time. The delay involves the death of the train master. Ben finds that in order to absolve a fellow engineer of murder he needs to look into the facts. Complicating the matter is the fact that the engineer, he believes innocent of the crime, is an engineer who continually derides Ben for his faith.