After he announces he will prove that club owner Nicey Ferguson is linked with organized crime, the president of the Better Business Bureau, Mr. Copelin, disappears, along with the company payroll. Radio announcer Andy McCaine broadcasts the news, stating that there is nothing to link Copelin with the missing money, and is warned by his sponsor, department store owner E. E. Nichols, to leave politics out of his program. When Andy refuses, he is fired. Andy points out that his contract doesn't allow him to be fired, so his boss puts him to work broadcasting the children's hour. Meanwhile, Dunk Glover, Andy's legman, continues to investigate Copelin's disappearance. Andy decides to take the program on location, broadcasting the activities of children. One boy, Mouse Malone, writes to Andy and invites him to see a boxing match that he is presenting. Mouse reveals to Andy that he believes Nicey Ferguson killed his brother Danny. He tells Andy that the night Copelin disappeared, Danny was asked to do a cement job and later was killed. The address Danny was sent to was the same address Copelin went to before he vanished. Andy investigates and learns that the house belongs to Weston, the chief accountant at Copelin's business. In the garage, under an oil slick, Andy finds new cement and assumes that it is Copelin's grave. He suspects that Danny was killed to keep him quiet. Pretending to be interested in buying the house, Andy calls Weston. He trails Weston to Nicey's club and follows both of them back to the house, where they dig up Copelin's body. The police identify the body, and Andy starts to broadcast from the murder site. A shoot-out between Nicey and the police ensues and Nicey is killed. Nichols is discovered in the house with Nicey and is arrested by the police. Vindicated, Andy gets his old job back.