With the help of the young, attractive agent Anna Schilling, secret service chief Vogel wants to get to the top of the "Millenium" terrorist group: He smuggles Anna in as a nanny to the widower Ernst Hoffmann, who is a member of the group. The two quickly become close and Ernst is able to persuade Anna to join his organization. But Helmut Müller, head of the terrorists, has Anna's past investigated and decides..: Anna must die...