Australian backpacker Clare (Teresa Palmer) takes her camera through Berlin’s Friedrichshain-Kreuzberg district. She was particularly fond of the old GDR buildings – and Andi (Max Riemelt), the likeable English teacher she met by chance. The two get along immediately and Andi shows Clare allotments, the neighborhood and finally also his bedroom. What begins as a romance, however, soon takes an unexpectedly dark turn: The next morning, Andi is already at school, Clare wants to leave the apartment. But the door is locked and the old building is otherwise empty. At first Clare thinks Andi just forgot her and accidentally locked her up. But Andi has no intention of ever letting her go again.