Every day they clean the dirty windows of their cars from the filthy film that has formed overnight. Measuring stations call a low smog warning. But one day a soccer player collapses on the pitch with breathlessness.

Anka, a student active in the extra-parliamentary opposition, has had enough of inconsequential discussions. As she no longer believes that she can change the world with words alone, she plans a militant action: as a protest against the Vietnam War, she plants a bomb in a Cologne department store to force the public into a debate.