When the nephews of Phyllis Carter are killed in an automobile crash while under the influence of narcotics, she persuades Police Lieutenant Jim Hahan to use her as an undercover agent.

A former GI gets his old job back working for a bookie after returning from serving in the military. Unfortunately, he loses the $20,000 he was supposed to deliver to gambling and a con artist. His attempts to get the money back leads to bigger problems including a murder plot.