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That day, we should never have started.
Aspiring YouTuber Gi-ho stages a fake seance for viral content, but Ja-young joins, seeking her missing sister Seo-woo. In an underground cistern, Seo-woo volunteers as the "possessed," but when she collapses, terror unfolds. Trapped with sinister forces, the students face a deadly fate, leading to a shocking twist.
Genres: Horror, Mystery, Thriller
Stars: YERI, Lee Chan-hyeong, Suh Dong-hyun, Oh So-hyun, Kim Eun-bi
