Hulda is faced with the case of a missing woman that consumes her completely.

Magnus assigns Hulda a new partner, Lukas, who she must take under her wing until she retires; Hulda is frustrated about her co-workers pushing her into retirement.

Elena is kidnapped by Katya's killer; her son Rudi tells Hulda and Lukas he saw a big, red man when his mum was taken; they realise that this must be connected to the sex trafficking ring.

While investigating the case of the two missing women, Hulda discovers what lies behind Dimma's death.

Lukas and Hulda's investigation progresses as they delve into political and legal corruption.

After discovering who killed Katja and kidnapped Elena, Hulda finds herself trapped with the killer.