The highly-anticipated follow-up to Darkness - Those Who Kill, the dark gritty Danish drama Blindness - The series revolves around an unsolved case in which three young men were killed within a few months. One of the victims was Alice's (Solbjørg Højfeldt) only son, 18-year-old Markus. Alice, who is an old friend of Louise's (Natalie Madueño) mother and has now been diagnosed with terminal cancer, contacts Louise and asks her to help find her son's killer before she dies.
Five years after his daughter's disappearance, Danish police officer Rolf discovers a fatal flaw in the DNA database and might finally be able to find her.