娘娘腔的小胖子冼洁晶（王晶 饰）被女友甩掉，绝望之际企图跳楼自杀。他的做法不仅引来无数群众围观，还因此结识了同病相怜的非常烦（冯淬帆 饰）和何马同（林俊贤 饰）。阿烦作风粗暴爱骂人，阿同内向胆小，两人的恋爱道路同样几多坎坷。主持“爱情止痛药”的电台DJ谭宇伦（曾志伟 饰）看三人可怜，决定帮他们成为泡妞专家。在了解三人的缺点后，谭带他们来到夜校，阿烦很快就迷上了美丽的女老师李楚红（李美凤 饰）。反惹来对方的反感。楚红和室友小贝贝（邱淑贞 饰）、芬妮（张曼玉 饰）住在一起，这三对男女因此机缘结识，继而展开一场妙趣横生的求爱大作战……

一个叫雪霞的女人在古代被冤枉砍了头，含冤死去，后来变成厉鬼到了现代她想找害死他的人的后代报复，她根据斩她头的拿把刀找到了一个光头仔，后来大姑妈(惠英红）和大叔公（谷峰）合手来对付女鬼，女鬼不是他们的对手，最后答应被祖师爷（午马）收服后又逃出的狮王要求，嫁给他做魔王的妻子，最终祖师爷给他们符咒让小雄带上，并嘱咐要用阴阳童子尿对付女鬼，经过连番厮杀终于将狮王和女鬼收服。情节中有一段卖粽子的，她说我要一个，一连要了很多，那人回头一看没头，都把粽子塞脖子里了，然后那人被鬼咬死了，还有有酒鬼夜晚回家路上看到她梳头，起了色心，过去一看是鬼，也被吸血了........

Byeong-tae (Yoon Mun-seob), a philosophy major at Y University, goes to a group blind date and meets Young-ja (Lee Young-ok), who studies French literature at H University. The young men and women of the 1970s, who have grown up under the influence of a rapid influx of Western culture, agonize over college issues, family conflicts, and their future paths in life. But such struggles are self-derisive, and they can see no tomorrow waiting for them. Between Byeong-tae and Young-ja, there is no promise of love, of any kind. They simply meet, and exchange meaningless conversation. Meanwhile, Yeong-cheol (Ha Jae-young), who always rides a bike and declares every time he drinks that he will set off in search of a whale, has feelings for another girl he met on the blind date, named Sun-ja (Kim Young-suk). But Sun-ja rejects Yeong-cheol, who stammers, has no prospects, and was even turned down for military duty due to health reasons, and he falls into despair. With nothing to look forward to, Byeong-tae and Yeong-cheol head to the sea. Yeong-cheol, who boasted that he would catch a beautiful whale in the East Sea, commits suicide, and Byeong-tae enlists with the military. Young-ja comes to see him off, even though she said she wouldn't see him any more, and the two of them kiss through the open window of the train that will carry Byeong-tae away.

电影讲述1994年，张正恒（詹怀云 饰）、程翔（邱以太 饰）、王尚禾（巫建和 饰）是成功补习班里面令人头痛的“三剑客”，17岁正是青春正盛、贺尔蒙喷发的年纪，在升学至上、禁止恋爱的补习班里，3个来自不同家庭、不同个性的大男生，他们被迫放下探索自我的欲望，全心准备联考。正恒想在毕业前谈一段轰轰烈烈的恋爱，却连对女生开口搭话的勇气都没有；程翔因为家中父母失和，住进正恒家准备考试，他女朋友一个换过一个，却不知道自己真正想要的爱情是什么？王尚禾的父亲就是补习班主任，在他的高压管理下他只能压抑心中想法，努力活成父亲期望的样子。三人的友谊，因为一个女孩“陈思”（林奕岚 饰），开始有了奇妙的变化。直到他们遇见补习班新来的小志老师刘敬志（侯彦西 饰），一段寻找自我的旅行终于启程。故事取材自蓝正龙国中补习班老师，已故纪录片导演陈俊志的故事（电影将时空置换成高中），三剑客虽未必是自己和当时补习班同学的经历，却也是从身边的其他人的经验做发想，借此融合成现在这样一个带点荒唐、充满热血，看到最后令人不禁鼻酸的故事。