Plot
Bhavesh Joshi, Sikandar "Siku" Khanna, and Rajat are three young men who meet at an anti-corruption rally and become friends. They later create a YouTube channel called Insaaf TV, an online show focused on justice, exposing common wrongdoings, and highlighting the rampant corruption in their city. Initially, their show is successful. They wear paper-bag masks and help to address small-scale corruptions in and around their neighborhood. However, as time passes, Siku and Rajat get jobs in the corporate sector after graduating, and their interest in Insaaf TV gradually fades. Bhavesh, however, becomes obsessed with eradicating corruption from society and continues his vigilante acts, despite the decline in their channel's viewership.
Bhavesh receives an email from an elderly citizen about water problems in his locality and begins investigating. He discovers that water pipes meant to deliver water to households have been fitted with additional pipes to siphon water to tankers, which are then sold back to the residents who were supposed to receive it for free from the municipality. Bhavesh leaks this information on his channel, which leads to Patil, the leader of the water crime syndicate responsible for the act, ordering a manhunt to uncover the true identity of the masked man behind Insaaf TV.
Meanwhile, despite providing all the proper documents and following up multiple times with the local police, Siku's police clearance for his U.S. visa is delayed until he pays a bribe. When Bhavesh learns of this, he becomes furious, and the two get into a heated argument. An enraged Bhavesh declares that all government officials and politicians are corrupt and should be eradicated to cleanse society, with Siku recording the exchange on his phone. Bhavesh later punches Siku, breaking his nose. In retaliation, Siku uploads the video to the Insaaf TV channel.
Soon, Bhavesh is labeled a national fugitive by the media. He is beaten by an angry mob, arrested by the police, and his identity is exposed to Patil, who threatens him. Desperate to prove his innocence and reveal the truth to the public, Bhavesh gathers evidence despite his injuries. However, he is caught, and Patil beats him to death. The police hand over Bhavesh's body to Siku for last rites, claiming it was a road accident, and warn him not to get involved. Blaming himself for Bhavesh's death, Siku tricks the police into believing he has left for the U.S. and takes refuge in an abandoned hotel that previously served as a safe house for their gang. He starts wearing a mask and, in a moment of desperation, blows up Patil's pump house, where the siphoned water was stored.
It is then revealed that Patil is backed by the local minister, Rana. Siku adopts a new vigilante costume, buys a motorcycle, customizes it with nitro cylinders, and interrogates government officer Subhash Mhatre, who reveals that Bhavesh was killed by Patil as he was about to uncover his illegal water supply activities. During the interrogation, Siku is nearly defeated by Mhatre's men but is saved by Bhavesh's martial arts trainer. Siku posts the interrogation video on Justice TV, revealing himself as the supposedly still-alive Bhavesh Joshi. He then begins learning martial arts and other combat skills from the trainer.
As the video goes viral, Patil is arrested, but Mhatre is found dead, with the police claiming it was a suicide, and Patil is released due to a lack of evidence. Siku, disguised, visits the dance bar Patil frequents and plants a bug in Patil's VIP room, discovering that Patil plans to blow up water pipes across the city to create an acute drinking water shortage. However, Inspector Sunil Jadhav discovers Siku at the bar one night. After a long motorcycle chase, Siku escapes, enraging Patil, who kills a constable and forces the police to frame Bhavesh for the murder.
Suspicious about the person behind Justice TV after Bhavesh's death, Rajat spies on Siku's girlfriend Sneha and discovers that Siku is still in India and has assumed Bhavesh's identity. Siku arrives at the location targeted by Patil's men and fights them, but he is defeated and unmasked in the process. Despite Siku's efforts, Patil's men succeed in blowing up the water pipes, leaving a wounded Siku helpless. Patil and Rana instruct Inspector Jadhav to kill Siku and dump his body in the water, thus framing Bhavesh for the attack on Mumbai.
Jadhav reluctantly shoots and injures Siku. Rajat follows Siku and captures the entire incident on camera. After Siku is thrown into the water, Rajat rescues him and takes him to a hospital under a fake name. As Siku recovers, Mumbai suffers from the severe drinking water crisis. Rana meets the Chief Minister (CM) and offers to provide free water on the condition that he receives all future water-related contracts. Both the CM and Rana become heroes in the eyes of the public as drinking water is provided free of charge.
Rajat delivers the video of that night to Jadhav through a child, compelling him to reopen the investigation into the blast. As the truth spreads across the city, Bhavesh's cause gains widespread support, leading to protests. One night, Siku infiltrates Rana's house. Rana, noticing his knocked-out bodyguards, encounters "Insaaf-Man" (based on Rajat's graphic novel) on his balcony.
