剧情介绍
“你说西藏那种高原上蚊子多不多？”“应该很少吧１“为什么啊？”“因为去过的人都喊那边缺痒碍”A homeroom teacher held 29 students hostage as vengeance for the mysterious death of their roommate. Their act takes a toll on life and sorrow. This bloodthirsty lesson brings up the raw characters of human beings.