Jim y su equipo trataran de erradicar una red de espías, que fueron traídos por un fotógrafo estadounidense. El problema es que el código con el que él y sus contactos se comunican es indescifrable, por lo que deberán idear un plan para que les revele el método de decodificación. Y el plan se inicia cuando logran que el fotógrafo elija a Cinnamon como su modelo. Durante la sesión de fotos, Cinnamon demuestra tener conocimientos de bioquímica, los cuales el fotógrafo decide explotar.

David Redding is a photographer and a spy working for the other side, who has supervised the infiltration of 150 agents into the U.S. The agents are apparently carrying some kind of biological plague, and only Redding knows the code. The IMF must get it from him. To do so, they set up Cinnamon as a former fashion model and scientist married to Jim who is working with a bacillus-suspension formula. This gives Redding a reason to accept the assignment - he tortures ""Jim"" who claims the U.S. is planning a nuclear strike. Redding and his assistant Morley plan to take refuge in Redding's bomb shelter and command center after sending a signal to his country (which is blocked by Barney), but Rollin and Willy arrest them. When the IMF fakes a nuclear attack Redding leads the others to the shelter, then ""kills"" Willy. He tries to send more coded messages (again, blocked by Barney), and Rollin witnesses Redding coding them. At the end he leaves as it is revealed that the IMF switched Redding and

Un important réseau d'espionnage dirigé par le photographe de mode David Redding, veut introduire un virus mortel de pneumonie aux Etats-Unis. Les agents de Mission Impossible déstabilisent Redding en lui faisant croire que la guerre nucléaire entre l'Est et l'Ouest a déjà commencé.