After years in broadcasting, news anchor Eun-ho rarely appears on TV, leading even her family to overlook her profession. Strangers suddenly claim to know her, and her memories start fading. Her troubles seem to stem from her sister Hye-ri's disappearance. Unlike Eun-ho, Hye-ri found contentment working as a parking attendant at the broadcasting station. Eun-ho grapples with "Dissociative Identity Disorder" feeling guilty for not recognizing her sister. In her Eun-ho persona, she faces a cold-hearted man, Hyun-oh, while as Hye-ri, she falls for Joo-yeon. Through emotional encounters, she confronts her inner struggles.