Marc, in his 40s, is a professor of literature at the University of Lausanne. Still a bachelor — and still living with his sister Marianne in a huge, isolated chalet that they inherited when they were very young — he carries on one love affair after another with his students. Winter has almost ended when one of his most brilliant students, Barbara, suddenly disappears. Two days later, Marc meets Barbara’s mother, Anna, who wants to find out more about her vanished daughter.
A sixteen-year-old boy insinuates himself into the house of a fellow student from his literature class and writes about it in essays for his French teacher. Faced with this gifted and unusual pupil, the teacher rediscovers his enthusiasm for his work, but the boy’s intrusion will unleash a series of uncontrollable events.
Ye Xiang Lun, a talented piano player is a new student at the prestigious Tamkang School. On his first day, he meets Lu Xiao Yu, a pretty girl playing a mysterious piece of music.
Kit, a troubled girl, is sent to the exclusive Blackwood boarding school, where she discovers that only four other female students have been admitted to learn the four pillars of knowledge under the ominous wing of the mysterious headmistress Madame Duret.
In the 1960s, two classmates go looking for their missing friends and teachers, all of whom took part in an illegal book club, only to come face to face with ghosts and deformed monsters that have taken over their school.