For women walking home alone late at night, Berlin's Walk Me Home helpline provides a reassuring voice at the end of the phone. When Klara calls the helpline one Saturday night, Jules answers. He has never experienced a call quite like this one. Klara is terrified. She's being followed by a man from her past. A man who wrote a date in blood on her bedroom wall. Tomorrow's date. As Jules is drawn into Klara's nightmare, will either of them ever make it home again?