A batch of counterfeit twenty dollar bills begin showing that appear to be the work of Tris Stewart (Lloyd Bridges), a counterfeiter already behind bars. Hoping to track down the location of Stewart's plates and the person using them, a prison break is arranged for Stewart with federal agents keeping an eye on his every move. Stewart and his girlfriend hope to secure enough phony money to run off to another country, where they won't be able to tell the money is counterfeit, but complications arise when their partner has problems and an undercover federal agent becomes involved.