圣诞节,平时工作繁忙的由加里(広末涼子饰)好不容易抽出空和恋人博(玉山铁二饰)约会,来到公园,对方却是一副冷淡的表情,说着“我有喜欢的人了,”向其提出分手。
伤心的由加里第2天以身体不适为由请了一天假,在家中做大扫除,又去剪了头发。重新整理好心情的由加里打算把对方留在这里的最后一样物品——家中的钥匙还回去,“可是当时得到钥匙时的心情,即使到现在都能记得,就像是拿到了打开通往世界之门的钥匙一样……”3年前的甜蜜的圣诞节在脑海中清晰起来。。Vishal (Ajay Devgan), a stock analyst, and his wife Swati (Urmila Matondkar). The two are in search for a flat in Mumbai. Vishal finds the perfect place on the 12th floor of a high-rise apartment building. However, the apartment has a horrifying past. The previous occupant of the flat, a young woman had killed her child and jumped from the balcony and died. Swati learns about this incident shortly after moving in and becomes oddly fixated with the story. Then, a series of inexplicable experiences drive Swati to near madness. Vishal becomes helpless and convinced his wife has developed some sort of psychological disorder. He consults a psychiatrist, Dr. Rajan (Victor Banerjee). The couple's maid (Seema Biswas) believes Swati to be possessed, and calls in an exorcist (Rekha). Meanwhile, other seemingly unrelated events take place around the building. The watchman (Sabeer Masani) is being terrorized, one of the residents Sanjay (Fardeen Khan) is behaving erratically, and a murder occurs. Inspector Liaqat Quereshi (Nana Patekar) is sent to investigate the murder at the building. All the while, neither the psychiatrist nor the exorcist makes much progress with Swat。