Marc Simon is a bank employee and actually a very quiet, inconspicuous family man. When his wife and daughter are found dead, he suddenly becomes the prime suspect in a murder case. When inspectors Thorsten Lannert and Sebastian Bootz penetrate the superficially perfect life of the family man, they discover several secrets. Marc Simon led a double life and, in addition to his wife and daughter, had a second family with Cornelia König and their son Florian. In addition, Simon has high debts. During their investigations into Marc Simon's mysterious financial activities, Lannert and Bootz come across André Lindner, a mysterious acquaintance of the Simon family who knows more about the bank clerk's business than he admits.
The obscure Italian hotelier Morelli also seems to be involved. The two inspectors slowly see through the true dimension of their case: while trying to pay off his debts, Marc Simon got caught in the clutches of organized crime and embezzled black money from the Calabrian mafia. And she now wants by all means back what is hers. When contract killers kidnap Simon's son Florian to use him as leverage, the bank clerk sees his last chance in an act of desperation...