The hidden thread had clearly snapped, yet the playing cards on the table moved by themselves.
My classmates applauded my magic trick. Only I knew I hadn't done it.
Xizi, a high school student who loves magic, encounters one inexplicable incident after another after starting school: Dormitory 604, which disappears and reappears; playing cards that move on their own after he loses control of them; and a stranger's laughter coming from somewhere in the dead of night.
A mysterious old man gives him a black wooden box and asks him to meet at the Night Book Tower at midnight three days later. To uncover the truth, Xizi and his friends enter the library, only to face a string of disappearances and bizarre events.
As familiar magic turns into the fear of the unknown, they must search for one another amid a growing maze of mysteries, and find a way out of danger.