Mohanlal plays the role of OMR, an affluent NRI who does oil business in Singapore. The movie begins on a new year before when the "Red Chilles", an all-girls music band with nine members, are involved in an accident. The girls flee from the place to leave their car behind. Moreover, the girls work for OMR and it was his car they drove around. OMR is forced to come down to India. As a mystery, several other characters come into light, including a party secretary portrayed by Thilakan and four policemen played by Siddique, Vijayaraghavan, Biju Menon and Ganesh Kumar.
Nandagopal, an associate editor with Keralareshmi, one of the leading dailies, is aggressive and daring and enjoys a good reputation among the media circle. Born and brought up in Mumbai, Nandan is the son of Venugopal, a daring journalist who was killed by textile mafia long back. Nandan, in Kochi meets Sekharan, an old naxalite who is running Jagratha, a newspaper which is feared by political class. Sekharan's outspoken and belligerent nature had earned him more enemies than friends. He is constantly fighting Vishwathan, who rules Kochi with his muscle and money. Vishwanathan holds a large share in Keralareshmi and enjoys a huge political clout at state and central levels. Shekharan brings out the role of Vishwanathan in the murder of Vincent Paul, which creates a panic in the political level.
Satya, the son of a priest, leads a straightforward life until he meets the girl of his dreams. His love for her drags him into the world of crime, making him lose everyone he is close to.
Gangaram (Gopichand), an orphan raised by M.S. Narayana always craves to be a Police Officer and he becomes one. His intensity, dedication and straight forwardness gains him respect from his seniors and soon he starts running a cell that specializes in killing the gang members of two gangs – Talwar Gang and Khaled Gang. How does this honest police officer try to get on top of these gangs forms the rest of the story.
The Harbour shows how two brothers end up on opposing sides of this system. One becomes the leader of an employer’s gang of thugs, while the other becomes an activist. All the while, the women in their family go hungry and the community is ravaged by violence and alcoholism.
Kallan Pavithran is in negotiation with God to save his great grandchild, who is the latest victim of the curse the Maker had imposed on Pavithran's successors for a theft he committed. Switch to Earth, two suspended cops Pappan and Joy are tangled in love and war. How the duo and Pappan's girlfriend Malu come out of the troubles make the movie.
The movie begins with the death of Varma a senior government official who was about to on the verge of making a major anti-corruption bust. The case is handed over to Chandrashekharan IPS who goes by the nickname of "The Tiger". A turning point comes in the movie when a TV journalist Suhara disappears along with her Cameraman. Chandrashekhar finds a link between both the cases and is out to catch the mysterious assassin who is responsible for the death of Varma.
Mathews, a ruthless rubber baron, is involved in various criminal activities. Baby, Mathews' son, begins to turn violent due to the environment he has grown up in, causing Mathews to repent his deeds.
A gang led by Aliyar (Thilakan) holds a grudge against Police Officer Haridas (Vishnuvardhan) who was responsible for the death of Antony's (Mammootty) wife and daughter 12 years ago and sent Antony to jail. When Antony is finally freed, he reunites with his old gang and they plan to kill Haridas.
A boy is adopted by his grandfather after his parents are murdered. He grows up to be an actor to honor a promise to his dying grandfather that he would perform in a play in his native village. The performance leads him to his parents' murderers.
Ajith is Red (it stands for Revolution, Education, Development), an orphan who has since grown up to be the local don in Madurai. Naturally he possesses a heart of gold and when not bashing up bad guys, he spends his time forcing schools to accept students without donations and taking care of orphans. Cheeni(Salim Ghouse) is his biggest enemy. Red falls for Gayatri(Priya Gill), the daughter of his friend and confidante Narayanan(Manivannan) and helps her without her knowledge. She too likes him but wants him to give up his life of violence. Meanwhile a reporter(Rajesh) for Ananda Vikatan begins to serialise Red's story under the name Aadi and it becomes quite the rage among readers
An undercover journalist finds himself hunted by corrupt politicians and the gangster whose daughter he betrayed in order to obtain evidence against him.
A master strategist is appointed following Veerappan's unabashed spate of crimes and murders. The official puts in place Operation Cocoon, which involves setting up a network of spies and informers.
While travelling to a new job location, Sita is attacked, and saved by a man who kills the offender. Later, she realises that her boss is the killer from the past and is warned against reporting him.