For bank auditor Mark Malecki, the world has been turned upside down since his wife left him. As a single father, he feels overwhelmed, drinks too much, and arrives late to work in the mornings. When his boss sends him on a disciplinary mission near Freiburg, he expects fresh Black Forest air and a routine job. However, in Ellertal, Mark encounters a surprise: the branch has higher securities transactions and savings deposits than the main office; several account holders are untraceable. It smells like tax fraud! The threads come together in the hands of the peculiar branch manager Alwin Graf Brelau, a passionate hunter. Malecki senses that Brelau has more than just a skeleton in his closet...