Although he is only ten years old, Jack is responsible for himself and his little brother Manuel and this fills him with pride. Their single mother works during the day and often goes out at night. There’s no father in sight. One day, Manuel burns himself with boiling hot water while bathing and Jack is blamed for the incident. It’s reason enough for social services to put him in a home where he is dreadfully homesick. He soon gets into trouble and bolts, heading for home. He arrives back, only to find his mother is once again absent. Jack and Manuel roam the city in search of her. They sleep in parks and in an underground car park, run away from the police and encounter adults, some of whom help and others who are indifferent.

The non-fiction author Walter falls for the physics student Agnes. He is fascinated by her extreme attitude towards life and her reserved appearance, which is quite the opposite of his quiet and regular life. When Agnes encourages him to follow his passion for writing fiction, he starts to work on a book, a portrait of how he sees her.

A school teacher discusses types of government with his class. His students find it too boring to repeatedly go over national socialism and believe that dictatorship cannot be established in modern Germany. He starts an experiment to show how easily the masses can become manipulated.