In a villa in Kassel, the brutally mutilated body of bank manager Sven Vontobel is found, alongside his dog, which has also been shot. Due to his controversial value creation methods, he was unpopular even among his colleagues. Soon, there are two more dead, also employees of the Nordhessenbank. Against all resistance from the ranks of the money mafia and in a world that is foreign and repulsive to them, Chief Inspector Paul Lenz and his young colleague Thilo Hain are on the hunt for a perpetrator who always seems to be one step ahead of them.