A cloaked figure slips into an exclusive psychiatric clinic and murders one of the female patients. Meanwhile, various sexuals liaisons are revealed. The mystery killer continues with his massacre: he beheads a nurse with a scythe, pushes a chauffeur into a spiked “Iron Maiden”, strangles an older female patient, kills a nymphomaniac with an axe, and shoots a lesbian through the neck with a crossbow. Doctor Clay and the police set a trap for the killer using one of the attractive female patients as bait. However, they are not prepared for the onslaugth that follows…
"2009年9月12日的北京,Joyside乐队在解散演出上对乐迷朋友们招招手,说了“再见”。这个进入无限休整期的北京摇滚地下之王自此销声匿迹,只留下几张唱片广为流传,一切似乎画上了一个悲伤的句号。2019年6月14日,同一座城市,一次不可思议的回归,使这个晚上永远被人记得。本片采用多机位呈现了Joyside解散十年后的首场复出演出,记录从彩排到现场的台前幕后。乐队人物讲述自解散后的成长经历、重组经过、演出曲目编排以及成员之间情感联结。一切都在都在告诉我们:The joker is back。