During his charity event, Langer is captivated by a mysterious woman named Nina; Prosecutor Siarkowska investigates a series of murders involving women.

Determined to uncover Nina's identity, Langer shows up at her office; Nina gets closer to Langer, aiming to gather incriminating evidence against him -- soon realizing that she has entered a dangerous game with an unpredictable man.

Nina becomes frantic upon learning that her son Ludwik is absent from school and she cannot reach him; new leads emerge in Siarkowska's investigation; Langer searches for his next victims while planning a surprise for Nina.

Siarkowska loses the investigation, but a new opportunity arises to prove Langer's guilt; Nina finds Langer's basement and faces yet another challenge; Siarkowska visits Langer's rehabilitation center looking for the missing girls.

Paderborn runs his case and finds out about a planned police provocation; Langer abducts Nina to show her the land where he wants to build the house they will share a future in; Ludwik and Maciek find themselves in serious trouble.

The police operation quickly gets out of control, putting Siarkowska in Langer’s sights; Nina and Paderborn experience terrifying moments while searching for the boys, soon facing the looming consequences of Ludwik's actions.