Plot
Baldev Sahay, a corrupt yet valiant ACP in Kolkata, attempts to save a dreaded gangster named Ganguly Bhai, but he loses his life, and Ganguly is kidnapped by Baldev's allies Kundan and Rajeev. Home Minister Jayavardhan is concerned about Ganguly being apprehended. Upon hearing the news of Baldev's death, his mother loses consciousness and is admitted to the hospital. Jayavardhan promises the people that he will apprehend Ganguly and offer his resignation if he is not successful.
In Hyderabad, Tirupathi, a doppelganger of Baldev Sahay, is a happy-go-lucky guy whose sole aim in life is to become a cop, but he does not achieve success. He lives with his brother-in-law Animutyam, who is a CI. To change his fortunes, Tirupathi approaches Nirupama, who claims to be a trader in astrological gemstones, which can change a person's fortune. In reality, she is a con artist. She gives Tirupathi a ring that actually has no powers.
Tirupathi ends up helping Animutyam apprehend a dangerous convict. However, Animutyam takes all the credit at the press meet, which Tirupathi also attends. Animutyam later reveals that he had rejected Tirupathi's application to the police academy. However, Jayavardhan notices Tirupathi on the news and tells him to pretend to be Baldev and put Ganguly in prison. Tirupathi accepts and visits Kolkata, where he is posted to Kalighat, impersonates Baldev, and frees Ganguly from Kundan and Rajeev. Tirupathi takes Ganguly to Jayavardhan, but Jayavardhan stabs him and reveals that Ganguly is his actual brother and not Baldev, as he had made him believe earlier, and leaves. Kundan and Rajeev track down Tirupathi and admit him to the hospital. When Thirupathi recovers, they narrate Baldev's past.
Past: Kundan and Rajeev are appointed as Baldev's assistants by A. K. Mishra, the Police Commissioner of Anti-Corruption Bureau, to acquire proofs of Baldev's corruption. Baldev is always accompanied by Venkat, a corrupt cop, as well as Kundan and Rajeev. He meets Ganguly and makes a deal with him for a huge ransom to hand over Tiwari, the only witness in the murder case of Gautham and his family, whom Ganguly and his brother Chotu killed on the former's order.
Meanwhile, Baldev falls in love with Vaishnavi, a philanthropist who also reciprocates his feelings. To get proof of Baldev's corruption, Kundan and Rajeev raid his house, where Vaishnavi is also present and livid with Baldev for maligning the goodwill of "Aasha Foundation" that she managed. Kundan and Rajeev also find a flash drive with a list of many cops whom they suspect of being involved with Baldev in his corruption scam. However, they are surprised that even they are on the same list.
Baldev's uncle reveals that Baldev's mother wanted to see him as a cop, and is admitted to a hospital for an important surgery. Baldev pays ₹10 lakh as fees for the surgery. However, at the selection, he is asked to pay a ₹10 lakh bribe, which is common for all candidates, according to the seniors. Baldev returned dejected but lied to his mother, saying he was selected to make her happy. The next morning, Baldev received posting orders and rushed to the hospital to show the same to his mother and uncle, but his mother died as she wished to forego the surgery to make Baldev a cop. Baldev then vowed to turn into a corrupt cop to pay the money on behalf of the honest candidates, who are about to join the police force without their knowledge. After this incident, Baldev and Vaishnavi get engaged.
Meanwhile, Baldev kills Chotu and arrests Ganguly for killing Gautham, with Tiwari serving as the chief witness. When Baldev is about to present Ganguly and Tiwari in the high court, Venkat sells the evidence documents for a huge bribe, along with information regarding Tiwari and Baldev. Acting upon this information, Ganguly's goons kill Baldev's uncle and then proceed to attack Baldev and Tiwari in court. However, Vaishnavi and Tiwari are killed in the hit, while Baldev escapes. Baldev retaliates and kidnaps Ganguly from Venkat's custody with the help of Kundan and Rajeev. In the process, he meets with a car accident in a hilly area, and his car explodes, thus killing him.
Present: Now realizing the truth, Thirupathi decides to set things right. Jayavardhan provides falsified evidence against the incumbent Chief Minister of Andhra Pradesh, claiming that he was the one backing Ganguly the whole time. After this incident, the CM is forced to step down and subsequently is arrested. Later, Jayavardhan gives his nomination for the post. Ganguly, despite being imprisoned, operates his crime regime from within.
Tirupathi rejoins the force, heads to Jayavardhan's house, and makes a deal with him to keep his post, provided that Tirupathi turns a blind eye to all of Ganguly's activities. Tirupathi then becomes close to Jayavardhan's PA, Raja. who becomes agitated after Jayavardhan insults him. Tirupathi introduces him to Nirupama and gets her to give him a ring to change his fortunes. However, the rings are actually cameras embedded inside the fake gemstone with a microchip to capture audio. With the help of this ring, Tirupathi exposes Jayavardhan's corruption to the media. Jayavardhan gets cornered and runs away "underground" along with his brother. In the process, he kidnaps Nirupama, Rajeev, Kundan, and Animutyam's family.
Meanwhile, Mishra, who has been following up on this case with close interest, reveals to Jayavardhan and Ganguly that Tirupathi is none other than Baldev. Right before the car explosion, Baldev is thrown off the car and falls onto a freight carrier, rendering him unconscious. The truck carries him to Hyderabad, and he is taken to the hospital, where Animutyam is provided with the case. Animutyam's wife had lost her brother named Tirupathi long back in her childhood and has been searching for him ever since. Realizing that Baldev is suffering from amnesia, Animutyam decides to pass him off as Tirupathi to keep her happy, but mainly to satisfy his wife's long search without spending much.
Mishra warns Jayavardhan and Ganguly that if Tirupathi discovers the truth, the consequences will be even deadlier. Tirupathi crashes into Ganguly's stronghold, where he arrests Jayavardhan, and a remorseful Venkat shoots Ganguly. Kundan, Rajeev, and everyone decide not to reveal the truth to Tirupathi/Baldev and thus spare him the anguish over his uncle's and fiancée's death. Tirupathi later marries Nirupama and lives happily ever after in Kolkata while still posing as Baldev.