High school junior Nishina Airi gets kidnapped on her way home from school and finds herself in a dark room. There, Airi and 9 other high school guys and girls are forced to play real life game in which they have to execute and kill each other.
After federal agents arrest a drug czar and put him on trial, the cartel leader's vicious son storms a prep school and takes its students hostage. They rebel against the armed intruders and try to take back their academy by any means necessary.
A family reunion at a remote mansion takes a lethal turn when they are trapped inside and forced to play a deadly survival game where only one will make it out alive.