Gabriel, Bobby and Costa are old friends from Altona, a multicultural hood in Hamburg. Just out of prison, Gabriel wants to turn his back on crime, but the others continue to operate as petty criminals. Friendships are tested as the trio navigate a dark world of mafia bosses and deals gone wrong.
Liam, an aspiring and ambitious young writer, eagerly accepts a tutoring position at the family estate of his idol, renowned author J.M. Sinclair. But soon, Liam realizes that he is ensnared in a web of family secrets, resentment, and retribution. Sinclair, his wife Hélène, and their son Bertie all guard a dark past, one that threatens Liam’s future as well as their own.
The film follows the career of detective inspector Marianne Atzeroth-Freier through the Hamburg police force of the 80s and 90s. At the end of the 70s, Marianne is 30 years old and a single parent; she becomes one of Hamburg's first female police officers. Marianne is one of the first women ever to be promoted to the Hamburg homicide squad. The opposing forces in this male-dominated world are strong, she is not really taken seriously and is even bullied along the way, until she comes to the attention of the furrier Lutz R.. Against the considerable resistance of her superior, Marianne investigates in her spare time and makes a significant contribution to solving the case of the "acid barrel murderer".
