新宿歌舞伎町的民宿大厦—(📼)—“流氓公寓”的山口组蜗(🛍)居点(🕰)。黑社会组织安生组的(de )老大安(🍖)生(🔬)芳雄与(yǔ )情妇及一亿(📿)日圆(👋)现金失踪(❣)后,流氓公(gōng )寓(yù )每(🖲)天(tiān )都(dōu )有黑道人被杀。外(wài )(🎡)界断定(dìng )这是传(chuán )(✳)说中的杀(shā )手(shǒu )“Ichi”所为。武(😚)斗(🍮)派头目(😻)垣原(浅(🐶)野忠信饰)于是(🔊)开(💞)始(⏺)疯狂寻找凶手。垣原(📯)是(shì )个极度(dù )被虐狂,视虐待(🎛)成(chéng )狂的老大(💻)如自(zì )己的神(shén )明一(yī )般(bān ),迷(mí )恋与(🙄)崇拜他。垣(yuán )原误信(xìn )退(tuì )役江湖老鬼阿(ā )叔,掳劫了敌对帮(👺)派头目(mù ),酷(🥕)刑(xíng )逼(bī )供,引起江(⚾)湖(hú )风(fēng )暴,令(🤘)安生(shēng )组进(💹)退(tuì )失(shī )据。老大(dà )情妇(fù )(🚗)Karen(孙(🐛)佳君饰)与阿叔相熟,为讨好垣原(💯)以身犯险(🙎)。Karen在(🔍)阿叔帮助(📛)下,渐渐接近神秘杀手阿一……