11 parts Complete MatureYoon Da-eun is a 17-year-old high school student who seems incapable of feeling emotions. Her cold and detached nature makes her an outcast, but what people don't see is the darkness lurking beneath her stoic exterior. Growing up in a broken home where secrets and violence reigned, Da-eun has repressed her emotions as a survival mechanism.
One day, her mother disappears without a trace, leaving behind cryptic clues and whispers of betrayal. Da-eun finds herself entangled in a dangerous web of lies, uncovering shocking truths about her family's past. As the police fail to make progress, Da-eun takes matters into her own hands, relying on her keen observational skills and calculating mind.
But things take a darker turn when Kang Ji-hoon, a mysterious new student, transfers to her school and seems to know more about her family than he should. Ji-hoon's charming yet unsettling demeanor unnerves Da-eun, and she can't decide whether to trust him or suspect him.
As Da-eun delves deeper into her mother's disappearance, she realizes she's being hunted. Strange figures shadow her, and those who try to help her meet tragic ends. Each clue leads her closer to a shocking revelation-one that could shatter everything she thought she knew about herself and her family.