Twin brothers return to their secluded home after their mother undergoes cosmetic surgery, finding her face bandaged and behavior unsettlingly different. The boys, Lukas and Elias, grow increasingly suspicious of the woman claiming to be their mother, noting alarming changes in her demeanor and routine. As their mother enforces strict rules and becomes cold and distant, the twins' apprehension escalates. They start to suspect that she might be an impostor, leading them to test her identity through increasingly severe means. Their once familiar home turns into a place of fear and uncertainty, where they can no longer distinguish reality from paranoid delusion.

The tension mounts as the twins' methods to uncover the truth grow more desperate and violent, straining their relationship with the woman further. The eerie atmosphere and mounting psychological pressure push the boundaries of trust and reality. The house, now a confinement for all three, becomes a battleground for truth and deception. What begins as a quest for reassurance spirals into a harrowing psychological ordeal, with the boys determined to reveal the true identity of the woman beneath the bandages—an endeavor that takes them down a dark and dangerous path.