Raveena, a news reporter working on an article on the incidents at a flyover. She also has a crush on the crime reporter Adithya, whose help she seeks for research material on accidents on the flyover. She finds that each day some motorists move the concrete blocks that partition the road just to take a quick U-turn and avoid the traffic. They don't move them back and the blocks are left to lie randomly on the road leading to many accidents. A beggar sitting on the flyover notes down the vehicle numbers of bikers who violate the rule to take the U-turn. Then he gives the list to Raveena. She obtains the details of the culprits using her contact in the traffic department, with the intention of confronting them for their "short-cut" and writing an article for the paper. Her attempt to meet the first person on the list goes in vain. Later the same day, the police take her into custody and accuse her of killing the same person she wanted to meet. She is shocked and tells her side of the story. Though the senior police officer rejects it, sub-inspector Ranga finds it believable and does some investigation. It is revealed that all the persons Raveena has on her list have committed suicide. They also noticed that they have committed suicide the same day they took the wrong "u-turn". Raveena and Ranga find another number has been noted by the beggar which is to be delivered to Raveena the next day. The duo traces the address and tries to rescue the man, a lawyer, who has taken the u-turn on the same day. As nothing seems suspicious, both leave only to encounter the very death of the lawyer whom they came to rescue.
Later Raveena tries to confront the beggar for the injuries in the fly-over. Meanwhile, she sees two young men violate the U-Turn and report it to Ranga. Ranga locks them up in an old Police lock-up to save them. But they start fighting and eventually die under the nose of the police.
With no way of finding the real cause of the death of the culprits, Raveena herself takes the wrong u-turn and waits for something to happen. The one who has been killing the culprits is a woman named Maya because she and her daughter died in an accident due to the concrete roadblocks that were moved by the culprits in order to make way for their u-turn. Using her supernatural powers, Maya tries to kill Raveena as well. But Raveena promises to find the person who was responsible for Maya's death. Maya agrees. Raveena, with the help of Ranga, tries to find the person who moved the blocks on the day of Maya's accident. They find out the phone number and address of the guy who moved the block. Raveena writes this on a balloon and leaves it on the flyover for Maya to find.
Disrupted by the following events, Raveena tries to call the number she found out earlier. It turns out to be Adithya's work mobile number. Devastated she confronts Adithya and informs him that due to his negligence a mother and daughter lost their lives. Adithya says it was not him who made the U-turn. He merely exchanged his bike with a mechanic. In the final twist, it is revealed that the guy who moved the block was Maya's own husband. Maya's ghost is waiting in Adithya's house to kill him when Maya's husband whom Raveena has informed about the events turns up and explains to Maya that it was because of him that they lost their lives. He then tries to commit suicide by jumping from the balcony. Maya's ghost saves him and tells him that his punishment is to suffer in this world with the guilt of killing his wife and daughter. The movie ends with showing some of such real events during the credits.
Actually a good movie.