The protagonist, Hanchuan, Assumed the position of monitor in the class.

He is involved in a bizarre criminal case with the disappearance of a student in his class.
The missing student is suspected to be a member of a counseling website, which gives the advice "better to die" to every counselor.

With the aim of eternal peace, the site's followers gradually spread around Hanchuan.
At the same time, criminals are also targeting Hanchuan and his friends.

How will he save himself and the people who are important to him?