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.

내가 좋아했던 사람이 나를 좋아하기 시작했다! 역전된 갑을관계에서 벌어지는 카페 알바생들의 사이다-로맨스