Anniyan is the story of Ramanujam "Ambi" Iyengar (Vikram), a lawyer who suffers from Multiple Personality Disorder. Ambi is an innocent and honest lawyer. If he comes across anyone not obeying the rules he files cases against them but all his efforts go in vain.
　　His constant habit to be perfect in rules and honesty leads him to develop a Multiple Personality Disorder in which a new character in him grows as Anniyan (Vikram) and starts a website called to hear people&♯39;s complaints. The new character, Anniyan, is a violent man. When he is Ambi and comes across a person who does not obey rules he makes complaints in his website. When he is Anniyan, he goes and kills them by methods used for torturing people in hell. He apparently takes the definition of these methods from the Garuda Purana.

　　久利奥，一个搞着自己论文的电影系学生，在他不忙于观看德国表现主义作品或经典恐怖影片时，在当地音像店度过大部分时间。在店里的一天晚上他与住在自己公寓外街道另一边的萨沙相识。而第二天，萨沙的母亲被发现死亡。久利奥确信谋杀的实施从阿尔弗雷德.希区柯克的影片中得到启发，于是违背女朋友的忠告，决定开始他自己的调查...

　　马德里。七名满怀希望获得跨国公司的一份顶级行政工作的求职者，在卡斯特拉那路一栋摩天大楼的办公室里准备迎接面试筛选。在经过了表格填写、合格鉴定以及其它商业官样文件的迷宫般的程序后，七名应聘者全都让秘书带到一间冰冷的房间等待面试筛选。当大家各自小心翼翼地自我介绍后，他们都想知道自己是否在被摄影机监视着，而且为什么这间公司在他们之中安插了一位心理学家帮他们做检查。其中一名应聘者提及到一种测试方法，这种类似于在他们身上进行的测试曾在美国被应用于挑选谁最适合在充满竞争的商业社会中立足。