In 1962, a sense of desolation and tension permeate the society. Fang Ray-shin, a twelfth grader at Tsuihua Senior High School, falls in love with Zhang Ming-hui, a counselling teacher. Troubled by the problems at school and home, Fang feels that Zhang Ming-hui is the only person who understands her.
Longing for freedom, Zhang Ming-hui forms a study group with his colleagues and students, including Yin Cui-Han and Wei Zhong-ting. Reading the banned books allows them to be liberated for a brief moment but at the same time, they put their lives in great danger.
One day, Zhang Ming-hui vanishes into thin air, and only Fang Ray-shin and Wei Zhong-ting, an eleventh grader, remember him.
Together, Fang Ray-shin and Wei Zhong-ting start looking for the disappeared teacher but find the school gradually slipping out of the world they are familiar with. Then in a realm dominated by ghosts and spirits, the pair are forced to face the terrifying truth…