

A school class in Berlin: happy young people, who think a lot about dancing and even more about sex. But Petra's boyfriend Mick has only one thing on his mind: how to get his next fix. His worries are Petra's worries too, and the girl stands by him. She buys packets of heroin at Bahnhof Zoo, 25 marks for a quarter gram. She steals her mother's vacation savings. She looks for her boyfriend on the drug circuit. But despite all her efforts, Petra can't hold on to Mick; he slides further and further down the drain: his first customer suddenly lies on the ground with a gaping head wound, and suspicion falls on him.