Anne is a fiercely intelligent, uncompromising defense attorney living a picture-perfect, affluent life in a stunning modernist home in Denmark alongside her loving husband, Peter, and their twin daughters. Her orderly world is abruptly challenged when Gustav, Peter’s rebellious, deeply alienated 17-year-old son from a previous relationship, moves in after getting into trouble back home. While Peter struggles to connect with his distant son, Anne uses her professional expertise with troubled youth to pierce through Gustav's defensive exterior. However, empathy quickly curdles into a dangerous, intoxicating fascination. Anne abuses her position of ultimate authority within the home, initiating a passionate, clandestine sexual affair with her stepson. When Gustav eventually attempts to reclaim his autonomy and the truth threatens to expose her carefully curated life, Anne ruthlessly turns her legal prowess and psychological manipulation against the boy—unleashing a terrifying campaign of gaslighting and institutional power to protect her family, her career, and her throne at all costs.