Peer Eggen, a major finance- and businessman, is positioning himself for an important acquisition; all while a troublesome tax case is on its way to court. Meanwhile, an invoice from an unknown Dutch company lands on the desk of Ida Waage, chief accountant at the influential law firm Biermann and Gude. The amount is modest, but seemingly lacks basis, and Ida discovers that the invoice is part of a money laundering operation on behalf of B &G's biggest client, Peer Eggen. She alerts the board, but instead of going after the ones responsible, they turn on her with harassment and fabricated accusations. Shaken, Ida alerts the Norwegian Police Unit for Investigating of Economic Crime, Økokrim, expecting this to be the end of it as far as she is concerned. Økokrim's investigator, Eirik Bråten, soon finds that the invoice is a cover-up fort a transaction between Eggen and the husband of Norway's Minister of Justice, Anette Nordeide. Others have also caught the smell of corruption.
