Surya is born with a strange condition under tragic circumstances. He is diagnosed with a rare medical disorder called Congenital insensitivity to pain and is tended to by the odd-couple combination of his father and his mischievous grandfather Ajoba. School life is difficult for a boy who doesn’t get hurt and is picked on by bullies and, yet, Surya finds an unlikely ally in his neighbour, 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 one tape that mesmerises young Surya is 100-man karate kumite fought by a mysterious one-legged man called Karate Mani. His first 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, 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 an adult, Surya remains as dorky as he was as a child because his father will 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 it is Supri who is pasting the posters. Both of them don’t recognise each other, but he is bedazzled when she fights off thugs to rescue a lady. Later, Surya visits the address mentioned on the poster to meet Karate Mani. He finds him knocked out by his evil twin Jimmy, and his assistant calls Supri to help him.