Knallhart, ER C Michael Polischka and his mother have to move to the problem area of Neukölln. Here life is very different from where they lived earlier with the mother's boyfriend. Michael must force himself to be hard and tough to survive there. Filmed.

Siegfried Lenz (born 17 March 1926) is a German writer, who has written novels and produced several collections of short stories, essays, and plays for radio and the theatre. He was awarded the Goethe Prize in Frankfurt-am-Main on the 250th Anniversary of Johann Wolfgang von Goethe's birth. Lenz and his wife, Liselotte, also exchanged over 100 letters with Paul Celan and his wife, Gisèle Lestrange between 1952 and 1961.