Mogambo is a criminal with a private army and a goal to conquer India. From his hidden island, he monitors all the crimes perpetrated by his henchmen to destabilise India. He has complete loyalty of his army who acknowledge him with the phrase "Hail Mogambo!". Mogambo, is also seen as ill tempered and his entire staff is mostly relieved when he says "Mogambo khush hua" (Hindi for "Mogambo is happy"). Mogambo's ultimate aim is to get a device that would turn people invisible, this, he thinks, will help him conquer India and the rest of the world more easily. Meanwhile Arun Verma(the protagonist) is a street violinist and philanthropist who rents an old house that he calls a "hostel" to take care of orphaned children with the help of his cook named "Calendar". Arun is seldom able to make ends meet and is in deep debt, so he decides to rent out a room on the first floor. Seema Soni, his first tenant, is a local journalist who eventually becomes friends with everyone. One day Arun meets a family friend, Professor Sinha and learns that Arun's late father, a renowned scientist, had created a
cloaking device that would make its user invisible. It is also revealed in a
flashback that Mogambo was responsible for Arun's father's death. Later, Sinha is identified by Mogambo's henchmen and they try to abduct him to get the device but Sinha flees. Arun then receives a letter from Sinha that explains where the device is hidden. With the directions in the letter, and accompanied by his ward, Arun enters his father's old laboratory, where he finds the device. He then wears the device and when he activates it, he becomes invisible. It is revealed that the invisibility does not work on the color Red and the person can be seen under red light or through red glass. Arun decides to use the invisibility to fight crime with another identity and calls himself "Mr. India". He starts by fighting corrupt businesses in his neighbourhood, which happen to be Mogambo's. Meanwhile, Seema being a crime reporter for a local news daily assumes the identity of a Hawaiian dancer "Hawa Hawaii" and infiltrates a lavish party hosted by Daga, one of Mogambo's goons. But she is identified and caught by Daga. She is, however rescued by Mr. India. Seema subsequently falls in love with Mr. India. On another occasion, Arun uses the device to trick one of Mogambo's henchmen to foil his criminal plan of stealing a gold idol of the Hindu god
Hanuman from a temple. On hearing about the invisible Mr. India, Mogambo is pleased that he finally has a way to get to the invisibility device. He, then orders bombs to be placed around the country so that Mr. India can be baited to help and then be caught. Tina, a child who stays at Arun's hostel is killed by one such bomb disguised as a toy. Mogambo, understands that though Mr. India tries to protect the entire country he is particularly fond of the kids in Arun's hostel. Hence, Arun, Seema, Calendar, and the other children at the hostel are abducted by Mogambo and brought to his secret hideout on the remote island. Arun admits to being Mr. India when Mogambo threatens to kill two of the children; but because Arun has lost the device by accidentally dropping it somewhere during the capture, he cannot become invisible to prove himself. Mogambo gives them time to correctly identify Mr. India and sends them into a cell. They manage to escape after stealing the keys from a guard. Meanwhile, Mogambo activates four
intercontinental ballistic missiles, which are poised to destroy all of India. Arun confronts him, the two fight, and Arun gains an upper hand. But as he is about to stop the missiles, Mogambo warns that the missiles have been fuelled and if he stops them now they will fail to launch and blow the island up . Nevertheless, Arun deactivates the launch, and the missiles detonate on the
launch pad. Arun, Seema, Calendar, and the children escape; Mogambo's fortress is destroyed, and Mogambo dies. It is later shown in an epilogue that Mr. India is being felicitated and all the children, Arun and Seema are at the ceremony. == Cast ==