Forensic scientist Dr. Viktoria Wex travels from Berlin to Pasym, a sleepy little town in the middle of the Masurian Lake District. There she has to prepare for a painful farewell: her uncle Fryderyk, whom Victoria has admired as a surrogate father and mentor since childhood, has been missing for days. A farewell letter to Viktoria suggests his suicide. When she finds an unknown dead man in the basement of Fryderyk's house, the family affair develops into a criminal case. What for the village doctor Dr. Baronowski looks after an accident, Viktoria appears suspicious. She realizes that the body of Antoni Trudzinski, an unscrupulous investor, has been expertly tampered with to conceal the time and cause of death!