Joe Corvin, a Syndicate money handler, ships millions through Swiss banks and the IMF must put him out of business. Corvin uses a courier that the IMF set up - Corvin has him killed and needs a new courier. Casey steps in as his mail-order bride addicted to drugs by airline employee-smuggler Jim. Corvin and Jim become partners but when the IMF fake-tightenes up security, they need a new way. Casey fakes her death and Corvin ships the cash in her coffin. Barney steals the money and the coffin is dropped on the runway, revealing a fake corpse. Corvin is confronted by the Syndicate, and an alive Casey shows up with two tickets to Miami. The Syndicate let Casey go and dispose of Corvin, permanently.

Casey se fait passer pour la jeune et naïve paysanne européenne qui doit épouser Joe Corvin, le champion toutes catégories du blanchiment de l'argent sale. Discrètement surveillée par Phelps, l'espionne gagne la confiance de son "cher fiancé"...