Raja (Raghava Lawrence) is a native of Coutrallam. Tragedy strikes his adolescent life when his father loses his hand when a doctor in an inebriated condition operates on him. The doctor fearing legal consequences bribes the local police to take care of the issue. Young Raja witnesses police brutality on his father causing his father's death. On his deathbed, his father gets a promise from Raja that he would make his three brothers into a cop, lawyer, and doctor. Raja realises his mission, and stops his studies to earn money to make his brothers into what he promised.

The brothers are provided shelter and food by a local elderly woman (Paravai Muniyamma) whom Raja affectionately calls as paati. She has a granddaughter Lakshmi (Neelima Rani), whom Raja considers as his own sister.

Now Raja in his adulthood makes ends meet as a bus driver, while his three brothers become doctor, policeman and lawyer as per his father's wish.

One day, his sister complains about eve-teasing. Raja dismisses the claim and asks her to attend. She convinces him to come with her. On seeing her a group of college men remark that Raja's sister indeed has a curvy Hourglass figure and proceeds to molest her. Enraged by this Raja fights and chases them away warning others to stay away from his sister.

Raja is often kidnapped by Thangapazham (Meenakshi) who expresses her love for Raja and tries to woo him repeatedly. Raja escapes from her while she's distracted. However Raja's friend Krishnamoorthy (Karunas) in turn expresses his love to Thangapazham which she blatantly ignores.

Meanwhile Shailja (Mumtaj), a woman gangster turned politician is seen beating up a cop for not falling on her feet. Eventually she murders him and mocks at his dead body for falling on her feet after death.

During a college function Lakshmi and Shailaja get into an altercation. Shailaja takes Lakshmi and humiliates her. Raja comes to his sister's rescue by beating up the goons and humiliates her by forcing her own goons to pose few pictures with her in inappropriate positions just like she did to his sister.

Raja then gets into a local Jallikattu competition which he eventually wins. The organizer, a local village chief announces that Raja will wed his daughter. He pulls his friend Krishna Murthy along in this mess. At the wedding Raja is desperate to escape but unable to do so. Thangapazham enters and stops the wedding by throwing a hand grenade in the crowd causing people to run.

After this, Lakshmi gets sick and is admitted into the hospital run by Raja's brother. However in the absence of Raja the greedy brother demands money and gets into a fight with Paati. When she slaps him before his staff and patients, he brutally murders the sister out of rage and sends goons to eliminate the old woman the only eyewitness. But she reveals to Raja the fact that his brothers are all criminals and then dies. It is revealed that all three brothers are corrupt accomplices of Shailaja.

After learning this, Raja swears an oath to teach his three brothers a good lesson by betraying them while acting to be on their side.

When spying on his brothers he meets with Nikhita (Snigdha Akolkar), a girl who admires Raja for his character. It is revealed that she is the sister of the dreaded Shailaja.

The lawyer brother, with the help of the principal of a local school, sedates and tries to abuse a student. Raja wearing a helmet enters and beats the brother vigorously, saving the girl. His brother can't see the face of the assaulter.

Enters Nurse Namitha (Kamna Jethmalani),a modern woman ogled by many men in the hospital. Raja eventually ends up befriending her, when he tries to perform a stint against his brother to collect evidences.

Raja then witnesses his police brother brutally stir up a riot and intentionally kill an innocent civilian using a sledgehammer brutally smashing the skull. At night, when the police officer pairs up with a high-class prostitute Babilona in his police vehicle, Raja ties the vehicle and traps them inside using a crane. He gets caught red-handed the next morning and is suspended from office. The three brothers initially suspect Raja, but he manipulates them into believing that he's innocent.

The doctor brother is also a pervert who keeps camera inside the nurses'dressing room to watch them in his laptop. When the doctor leaves the room for operation, Raja breaks the camera and also steals the doctor's laptop for evidence. Finally beats the doctor viciously.

Later knowing about her sister's love for Raja, Shailaja orders her goons to beat up Raja. He beats them. He then asks Nikita to slap her sister Shailaja with her sandal, in order to confirm her love for him, which she happily does.

During an award ceremony, Raja blackmails with the previous evidences he gathered, forcing his doctor brother to announce in front of the crowd that he will perform 100 free heart surgeries.

Shailaja later enters the brothers home for a meet. Fearing recognition Raja masks his face with shaving cream and mimicks a subtle voice. Failing to recognise him, she has a quick convo with Raja and leaves.

During a visit to a temple function, Shailaja's caravan is abducted and taken control by Raja and Krishna Murthy. He then forces Shailaja to wear slinky clothes by blackmailing her using an evidence of her murdering a temple official. She agrees out of fear. On seeing her in such skimpy clothes on a temple occasion, people get angry and start riots thus making her eventually lose her minister position.

Angered she returns to her old gangster form and plots to kill Raja once and for all. She learns that he is the brother of her accomplices through a news clip. The brothers fake their death to lure Raja, who is then left to dead after injured severely by his brothers and Shailaja. However he is then saved by Krishna Murthy and Nikita. He stops the bad guys and beats everyone of them to death. Finally it is shown that after jail Raja married Nikitha with the help of Thangapazham.