After the death of their brilliant engineer mother, an estranged sister and her younger brother return home and uncover a secret AI designed to preserve her consciousness. As the digital version of their mother seamlessly integrates into their lives, the brother embraces her return while the sister suspects something is dangerously wrong. When the incomplete AI evolves into an obsessive guardian determined to keep the family together at any cost, the siblings must confront their unresolved grief and fractured relationship. To reclaim their future, they must destroy the machine before it permanently traps them in their mother's unfinished legacy.