Surya is diagnosed with a rare disorder named
congenital analgesia, in which the person feels no physical pain. He is raised by the odd combination of his paranoid father and his mischievous maternal grandfather after the death of his mother. She was killed by chain snatchers while returning home after having Surya. The film flashes back to show that she fell off the bike and died instantly, though Surya is seen not crying in pain as a baby. School life is difficult for Surya as a boy who can't feel pain. He gets bullied by everyone, but finds an unlikely ally in his neighbor named Supri. At home, Surya learns to tend to his own wounds and binges on a whole host of
martial arts films on
VHS tapes thanks to his grandfather's unique tutelage. The only tape that mesmerises Surya is 100-man karate
kumite fought by a mysterious one-legged man called Karate Mani. Surya's foray into
vigilantism is to come to the aid of Supri against her abusive father, but that event leads to the family being evicted from the building they lived in, and Surya and Supri are estranged as children. They go their separate ways with each one finding purpose and mentorship in unusual circumstances. Ajoba encourages Surya to pursue his passion secretly & Surya trains himself by watching VHS videos. Meanwhile, Supri is trained by Karate Mani, whom she meets when she accidentally bumps into his scooter. As a young man, Surya remains as dorky as he was in his childhood because his father never let him leave the house. When his father finally agrees to let him outside, Surya finds a poster advertising his childhood idol Karate Mani. This poster leads him to the very building where he and Supri had been separated years ago, and finds Supri putting up the posters. Both of them don't recognise each other, but he is fascinated when she fights off thugs. Later, Surya visits the address mentioned on the poster to meet Karate Mani. He finds him knocked out by his evil twin brother Jimmy, and his assistant calls Supri to help him. They take him to a hospital, where only Supri and Surya are left when the rest of them leave. Later, Supri leaves from the hospital on the insistence by her fiance Atul, Mani recovers consciousness, and escapes from the hospital, feeling that the hospital will bill him a bomb for trivial treatment. Surya chases him and fights off the hospital staff who had come to capture him, and Mani is impressed with his skills. Mani reveals that he and Jimmy were trained by their father, a karate trainer, since they were kids. Mani showed his talent for martial arts and easily won the heart of his father, which made Jimmy jealous. One day, Mani saved Jimmy from a speeding truck, sacrificing his leg in the process. This further elevated Mani in the eyes of his father, and Jimmy is further estranged. After the 100-man kumite, his father gifted his locket to him, whereas Jimmy takes up the path of crime. Imprisoned for one of his crimes, Mani got cozy with Jimmy's girlfriend, and Jimmy caught them red-handed. This incident created a permanent rift between the two, putting Mani in a guilt trap. Later, Jimmy started a
security agency and bullied Mani with men and guns from his security agency, taking something from him each time he visited him, while Mani relented out of guilt. Supri later reveals that Atul won over her parents by taking care of their medical expenses, which forced her to stay with him so that her mother would get adequate medical care. Atul is taking her family to
Canada to treat her mother. Supri is falling into the same trap of family burden as her mother bore all her life with her abusive husband, so much so that she doesn't have time to think for herself and no clue about her career. On his previous visit, Jimmy snatches the locket that was given by their father to Mani, and Surya vows to get it back for him. His grandfather tries to dissuade him as it is too dangerous but eventually gives in when he realises that he should not kill this very motivating factor. Surya meets Mani, who refuses to take him to Jimmy, but when Surya stops at nothing, he accompanies him to Jimmy's office. Meanwhile, at the airport just before boarding their flight to Canada, Supri's mother insists that she run away from Atul so that she doesn't go through the same fate of an overbearing husband. Supri's mother hatches a plan wherein she covers up for the absence of Supri inside the plane and falls unconscious with a heavy dose of
insulin once the plane lands in Canada, and once unconscious at the airport, she has to be admitted to hospital to be treated. Supri leaves after some pushing from her mother and goes straight to Jimmy's office, knowing Surya would create some ruckus there. At Jimmy's office, a fight ensues between his staff and the two. Surya easily thrashes most of them, and they are surprised to find that Surya doesn't experience pain, which makes him more lethal. In the ensuing fight, the fire is triggered, and the staff lock them in a room and escape from the building. Supri enters in a nick of time and rescues them. They later take refuge at their old residential complex, where they had spent their childhood, which is deserted for reconstruction, and Ajoba gets them all the essentials like blankets and food. In the morning, they are all captured by Jimmy, who arranges a cruel game, where each one of them has to fight his staff members one-on-one. The first up is Mani, followed by Supri, Surya, and Ajoba. Supri and Mani knock down a quite a few men before going down. All of them attack Surya barring one, and Surya knocks them all out. Jimmy then sends his last remaining fighter: his best one. Just to quickly end the contest, he changes the rules: a 10-point match where a point is scored with every hit. Surya is injured when his leg is broken by his opponent. Mani throws his crutch for help. Surya decides to break the rule and hits his opponent close to the eye with the crutch, temporarily blinding him and finishes off the match. Jimmy is enraged where he shoots and stabs him. Supri intervenes, snatches the gun and shoots Jimmy dead. Later, Surya wakes up at his home, turned hospital. Supri and Ajoba are next to him. Mani is revealed to be in prison, who owns up to Jimmy's death. Surya goes on to fulfill his father's aspiration to become a
chartered accountant. Supri's mother gets treated in Canada, where Supri is now liberated from the burden of her mother's treatment and finally starts thinking of her own self and her career. However, Surya and Supri are shown heading towards their new adventure. ==Cast==