Das Ende einer Maus ist der Anfang einer Katze (2011)

Sensible German tax collector Erol Ozak has to apprentice haughty young Jana von Unruh. Her thoughtless zeal when confronted with a bag of presumably ill-gotten cash entices a gunfight, which Erol survives, but the bag disappears after a car-crash during his flight. Alas the police and even his superiors mistrust his story, suggesting he may have stolen the cash. The gangsters came after Erol to pay up, offering as only alternative abusing his tax service skills for illegal extortion. Somehow his neighbors and public functionaries are involved.