Employees of a TV channel set out to capture ghosts as a marketing tactic. They choose a dark, spooky house and create fake ghost effects. They’re in for a rude shock when they are chased and eventually haunted by real spirits.

Krishna Kumar (Prabhu Deva) is a happy go lucky Tamilian who works in Mumbai. He spends his time searching for his dream girl. He wants his life partner to be educated and have supermodel looks. He doesn’t want a country girl for a wife. His grandmother is on her deathbed and his father wants him to get married. His father with the aid of his grandmother chooses a girl from their village. He tries many times to stop the marriage but nothing works. He gets married to the girl, Devi (Tamannaah) unwillingly. He tries to get rid of her and shifts to a new house to hide her from his friends.

Three criminals are always on the lookout to make a quick buck. They brainwash a young man and use him to steal a large sum of money.

The film opens with Pavalakkodi (Nayanthara) in the hospital and her father Vairakannu (Thambi Ramaiah) weeping for her misfortune. Later, the scene cuts to their futures.
They live in a small house. Vairakannu is a single hardworking father who brought her up and Pavalakkodi, his only daughter, takes care of him in his old age and doesn’t wish to marry. They lead a happy life. Nearby in an apartment, three thieves enter a house and rob all the jewels from the lady, harass and kill her. To investigate this case a Police officer (Harish Uthaman) arrives at the site and finds no clue about the men and finds a Rajasthani blanket in the house. Upon asking, the house owner and maids say nothing, and therefore the case leads to nothing.

Desperate brain cancer-ridden Caucasian George States, with only six months to live, decides to capture a male cobra with hopes of obtaining Nagmani from the shape shifting Naga female. For reasons that remain obscure throughout the film, this will not only cure his brain cancer but also make him immortal. He hires workers in the jungles of Natchi, Tamil Nadu, who witness the intimacy of the cobras, and capture the male, allowing the female to escape. George then holds the male cobra in a glass cage in the hopes that the female cobra will attempt a rescue, and he will then release it in exchange for the Nagamani. The region experiences horror and religious awakening after the enraged female cobra. With the image of its oppressor in its eyes, sheds its snake skin and takes on a female human form, setting out on its deadly mission of tracking down and destroying her mate’s oppressor, and whoever else gets in her way, whether involved or not.

A winter diving trip in Norway turns into a desperate race against time for two sisters when one of them becomes trapped at the bottom of the ocean by falling rocks.

Jeevanandam (Jai), An aspiring filmmaker travels to ooty along with his wife Jacqueline (Anjali), his nephew and two friends in the hope of making a film on an haunted house he comes to know of through a facebook post, He lives in a Guest house closer to the house where they begin experiencing strange things with the Kid being lured by a balloon and befriending a Ghostly Girl. Finally realising they are the targets of Ghostly beings, meeting a priest who befriends them and helps them and through him get to know Jeevanandam’s past as Charlie and injustice done to him, Next step we have the hero taking revenge on the villain for the injustice done to the victims who have become the Ghosts and the priest being revealed as a spirit himself, finally they leave the place. and the camera pans out of the film screen and the whole film is shown as a Movie played in a theatre with it being the first film of aspiring film maker Jeevanandam ( Raj Tarun) and The reel Jeevanandam (Jai), Anjali and the others as actors in the film. The Film ends with Raja Ravindra a film person receiving a call from people and planning to demand money as the film has controversial content and finally the real ghosts appear and finish him off.

The film starts with the murder of a former Police Commissioner Shanmuga Sundaram (Subbu Panchu) by an escaped prisoner Kamal Ekambaram (Riyaz Khan). The story then shifts to Masilamani aka Massu (Suriya) and his friend Jet Li aka Jettu (Premgi Amaren) who are small-time con artists. Massu meets Manini (Nayantara), a nurse, and they subsequently fall in love. While trying to escape after a heist gone wrong, Massu and Jet meet with a car accident, post which Massu starts seeing dead people, with whom he can communicate. Jettu had died in the accident and is now a ghost, too. Massu forms a group of loitering ghosts to earn money by performing fake exorcisms and extorting money from scared, rich people, while promising the ghosts that he would fulfill their last wishes in return. Meanwhile, Manini, who thought Massu was working in a finance company, gets to know about the fake exorcisms and leaves him in a heist.

Sanjay buys a haunted property in a village and invites his friends to uncover the mystery of the house. However, things get complicated when two of his friends die.

Vaishnavi (Trisha) is a popular chef in India. Her friend’s fiancé Cotton (Yogi Babu) is stuck in a situation that demands him to go to London to work as a chef, but he is not qualified. He asks Vaishnavi to accompany him to pose as an assistant and help him secure the job. Vaishnavi agrees and travels to London with Cotton and a relative Balki (Swaminathan). They stay with Ganesh (Ganeshkar) and his wife Madhu (Jangiri Madhumitha) and work at a restaurant. Vaishnavi meets Sandeep (Jackky Bhagnani) there, and they fall in love.
One day, on a boating trip in a river, Vaishnavi injures herself and washes off her blood in the water. This triggers the vengeful spirit of a dead woman at the bottom of the river. She possesses Vaishnavi, who goes on a killing spree. Her friends experience numerous paranormal occurrences and find that Vaishnavi is possessed. The spirit turns out to be Mohini (Trisha), a lookalike of Vaishnavi. Meanwhile, Sandeep proposes to Vaishnavi, and they get engaged. They meet Sandeep’s mother Menaka (Poornima Bhagyaraj) and his father Vicky/KVR (Mukesh Tiwari). Mohini is enraged seeing him, and this reminds her of why she was killed.

Madison is paralyzed by shocking visions of grisly murders, and her torment worsens as she discovers that these waking dreams are in fact terrifying realities.

Depressed in life, three youngsters decide to commit suicide and go to a beach house to do it, unaware that the place is haunted by a ghost.