Marcin, a cold and deeply detached young stranger, arrives in Warsaw with a concealed, violent agenda to settle a score with an affluent, middle-class couple. To infiltrate their lives, he integrates himself into the hedonistic world of their bohemian daughter, Ola, leading to a reckless, intense relationship. However, the psychological manipulation turns deeply transgressive when Marcin begins a secretive, toxic extramarital affair with Ola's vulnerable mother, Pola. This destructive web of domestic infidelity and hidden identities systematically strips away the family's manicured facade, culminating in a cold-blooded chain of violence where the sins of the parents are brutally paid for by the next generation.