In the 1960s, some teachers and students of Tsui Wah Middle School were arrested for organizing a reading club. Then, a female student, Fang Ruixin, fell to her death. Since then, rumors of ghosts have continued, and the school has held rituals to calm souls and exorcise evil spirits. Thirty years have passed, and the authoritarian school spirit of Tsui Wah Middle School remains the same. Transfer student Liu Yunxiang accidentally broke into the forbidden area of the campus, Hancui Building, and unexpectedly encountered the sealed ghost Fang Ruixin. At the same time, she also gradually uncovered the tragic truth hidden in the campus...