In the heart of South Chongqing, a medical school's forgotten classroom harbors a chilling secret. When a group of curious students dare to uncover its past, they embark on a chilling journey that blurs the line between life and death....

The story revolves around a group of students who dare to dive into the supposedly haunted swimming pool of South Chongqing College, only to uncover a chilling secret that intertwines their lives with the tragic past of the school....