Eighteen-year-old Tadek runs away from his aunt to return to his bleak hometown, throwing himself into the care of his beautiful older half-sister, Anka. What starts as a desperate need for connection quickly crosses the line into a volatile, physical forbidden romance as Tadek becomes obsessively protective of her. The situation turns dangerous when Tadek discovers that Anka is trapped in an extramarital affair with Andrzej, a charismatic but ruthless local neo-Nazi businessman. Andrzej is secretly a married man, hiding his wife and secondary infidelities from Anka while using her for status. Driven by intense jealousy and a desire to possess his sister completely, Tadek sets out to systematically destroy Andrzej's reputation, setting off a dark chain of social and psychological violence that forces the siblings to face the consequences of their isolation.