When newspaper man Carlton Edmunds is gunned down on the street, the police and his friends initially think it's a case of being in the wrong place at the wrong time. Eliot Ness and his men soon determine that Edmunds was the target of a mob hit. His old friend, Floyd Gibbons, now a globe-trotting reporter, happens to be passing through Chicago and decides he's going to find the culprit. Working with Ness, they soon uncover that the hit was related to a series of articles Edmunds was planning on the takeover of the scrap metal business by the mob.