Kim Ha-na finds herself trapped inside a vast house that mirrors the deadly setting of her nightmare novel, 'All the Fiancees Die.' She realizes she's reliving the story where she, as an extra character, faces inevitable death despite her attempts to change fate. Searching desperately for a way out, she recalls a detail about Samjung Trading and a relative's wife embezzling money to fund a resort project. As Ha-na digs into this clue amid rising confusion and frustration, she questions if uncovering this secret could alter her doomed destiny or if she's doomed to repeat the tragic cycle.