Based on the 2023 Black List script Unnie by Lynn Q. Yu, Perfect Girl is set in the high-stakes world of K-pop. Described as Scream meets Black Swan, the story follows a group of trainees competing for four coveted spots in a new supergroup. When a talented and mysterious new girl is introduced to the casting competition at the last minute, things start to get strange: Girls are being hunted and attacked one by one.