In 1983, a group of High School students in a day of detention must run for their lives when a teacher in a wheel chair turns out to be an ex black ops soldier having a murderous flashback.部落(luò )的人(😟)，还是延续(🎧)着以前的生活，在(zài )山洞居(jū )住，跟以前好像没有太大的差别。