Vienna prosecutor Kara Hoffmann dies in a car bomb attack while her boyfriend, then chief inspector at the time Alexander Haller goes blind. Haller blames himself for Karas death. When he wants to take his own life in Vienna at night, the daring Berlin taxi driver Nikolai Falk saves him. Well-heeled Haller then hires him as chauffeur and assistant when Haller's arch-rival breaks out of prison and tells him that the attack was not for him but his girlfriend. Together, the two become private detectives and begin to re-examine Kara's last case. Haller's particularly well-developed hearing and sense of smell are of great help - for this and other cases.