At a high school senior prom, a masked killer stalks four teenagers who were responsible for the accidental death of a classmate six years previously.此刻，翼人正吃完午餐，正在(🐍)旁边的树荫下(xià )休息，平时翼(💊)人都(🤽)是在旁边的山(shān )洞休(xiū )息，山洞(dòng )里面无法点燃火焰，显得很黑暗(🔘)(àn )，大家都不(bú )太喜欢白天呆在山洞里面，除非是晚(wǎn )上或者下雨的时候为了避雨，会在(zài )山洞里(lǐ )面。