Anna's mission is to prevent a group of time gangsters from re-establishing the past and pushing Germany in historic chaos.
Anna is in a hotel in Berlin and has to solve a riddle. A woman has been murdered in the room next door and a police inspector wants to question her. Then she finds a mysterious message in German on her bathroom mirror saying, "In der Teilung liegt die Lösung, folge der Musik." What does that mean? Maybe it has to do with the old music box lying on her bedside table. The suspense lasts until the very end: Will Anna be able to find out what this all means on time?
Anna is the virtual heroine of a computer game. A player assists her. He sits in front of his computer and guides Anna across Berlin and back and forth in time. She goes from East Berlin to West Berlin, from 2006 to 1961 to 1989 and back. The player analyses the situations together with our heroine and he ultimately has to make life or death decisions for her.