Deep within a single mind lie the secrets of childhood and shadows that refuse to fade. Sera, a successful psychiatrist, returns to confront hidden memories and scenes from a white room, where two girls' personalities have split into two warring versions. When she meets Yoon Jae, a mysterious and ruthless man, the real game begins: facing the darkness within and uncovering the secrets of an ancient psychological project focused on mind and memory control. In a world where no shadow can be tru