Former OSS officer Alan Holiday (Leslie Nielsen) is visited by Catherine Carrel (Aliza Gur) on New Year's Eve, Carrel says she's a close friend of Jules Lemoine (Hugh Latimer) also a former OSS officer who served with Holiday during the war.
Lemoine visits and wants Holiday to go to Paris on a secret mission: delivering a reel of tape which he gives him, Lemoine keeps a fake reel himself to deceive enemy agents. When Lemoine is killed and the fake tape stolen Holiday decides to go to Paris.
He poses as an assistant to photographer Louis Vernay (André Maranne), and they take three models along to further the ruse.