Die Vierde Kabinet revolves around corruption in the police and the Organised Crime Unit, the hated internal investigation unit of the police who set traps for and spy on other police units to try and uncover corrupt members.
The same corrupt police attempt to turn the tables by trying to find information about who is in this specialised unit.
In 1993, shortly before the first democratic election in South Africa, a group of policemen rushed to get rid of files containing information about illegal police operations.
The files were placed in filing cabinets, taken to a secret place and destroyed with explosives. But in the atmosphere of panic and disorder a cabinet - the so-called "fourth cabinet" - got lost and was forgotten.
In 1997, Bonnie Badenhorst (Vanessa Pike), a policewoman attached to the special police unit investigating corruption, discovers the cabinet. Badenhorst, whose brother died in Angola, decides to remove the cabinet and hide it without informing her colleagues.
Homicide Detective Lise returns to her hometown for the first time since a local tragedy shattered her teens. Tragedy strikes again when a teenage girl vanishes under circumstances that mirror the disappearance of Lise's two best friends, Ana and Marion, fifteen years earlier: an unsolved case. Convinced there is a connection, Lise is determined to find the missing girl and answers to the past.
Satake Junko is arrested as a suspect in a series of suspicious deaths. The murders of five men she allegedly killed are all over television talk shows every day. As the media coverage heats up, a journalist Tanabe Junko, who works for the popular non-fiction writer Kubota Mei, and Kubota’s new assistant Ukai Yuko begin to gather information on the cases in a search for the truth.
The old DGM might have left Bannerman School, but their spirit remains, and there is still a need to get even, wrongs must be righted and injustice has to be fought.
Although Czech republic is country free of rabbies, some cases of infected animals appear near one of villages in Sumava region. Virologist Pavel Rogl, that is in his thirties, has task to inspect the situation, supervise the vaccination and find the source of infection. He is also charged to elaborate an expertise for team of police detectives, that are investigating mysterious double homicide. It is possible, that murders are connected to infection. Is it a human murderer, or big beast that escaped?
A widow, sweet like the scent of burnt ylang-ylang, is surrounded with men enthralled with her: her ex-husband, a high-class gentleman, a bad boy model, a good subordinate, and a former cop friend. They join her in a mysterious murder case wherein the killer may be closer than we think.
A Food Delivery Guy, who finds a bloody corpse of a young woman in the middle of a night & A Female Police Inspector investigating a missing child's case collide into each other as they meet with a fatal accident, which sends both of them into a Never ending time loop until they figure out an Unimaginable way out of it.