Ida Waage is a trusted and loved CFO in one of Norway's biggest law firms.,Biermann and Gude, when a suspicious invoice lands on her desk.

Ida chooses to warn the other leaders in the firm. The consequences are swift and brutal, and reach a crescendo when Ida is accused of harassing her employees in a humiliating meeting.

A shaken Ida discuss the case with her brother-in-law and lawyer, Ola, who advise her to bring the case to the police. Ida's husband, Tore, is against it, saying that the risks are greater than the rewards.

The police begin their investigation, and Ida knows it's just a question of time before Eirik realizes that she's a whistle blower. The case is about to spiral out of both Ida's and the Eiriks control.

Aida suspects that there is a whistle blower in the company, but Ida refuses to come forward; Eirik understands that B&G has overtaken him.

After Ida's public confession the pressure hardens on Norway's Minister of Justice, Anette Nordeide. The press is hunting her, and she is under full criminal investigation.