In the bustling heart of New Delhi, the Prime Minister is preparing to unveil the priceless Kohinoor Diamond at a grand exhibition in Rashtrapati Bhavan. The diamond is being returned temporarily from London for display, and the whole nation is watching. But just days before the ceremony, a notorious international gang led by the cunning villain Ranjeet Rana plots to steal it and destabilize India’s global image.
The country’s top RAW agents are assigned to protect the diamond. But in a comical twist, due to a goof-up in the intelligence system (thanks to a clerical mistake), only one man is mistakenly left as the “last hope of India” — Inspector Jhandu Singh, a clumsy, overconfident, and hilariously patriotic officer of the Delhi Police’s Crime Branch.
Jhandu Singh is no ordinary man. He believes he’s the most intelligent and stylish spy in the country, though in reality, he’s barely competent at filing FIRs correctly. He wears outdated suits, drives an old Ambassador car, and tries to imitate Bollywood spies like Agent Vinod and Tiger, but always ends up in embarrassing situations.
When RAW mistakenly selects him as the lead operative, Jhandu Singh takes the job with full confidence. He’s joined by his loyal but smarter junior, Chhotu, a constable who actually has all the brains but gets overshadowed by Jhandu’s blunders.
Jhandu Singh’s first mission is to track Ranjeet Rana’s men in Mumbai. Disguised ridiculously as a South Indian priest, he ends up getting caught in a temple festival dance, mistaking a coconut vendor for a terrorist. Chaos follows, but surprisingly, he uncovers a clue purely by accident — a microchip hidden inside a ladoo.
Back in Delhi, Jhandu Singh bungles his way through secret meetings, accidentally spraying pepper spray on RAW officers, and even setting off the fire alarm at the PMO. Yet, every blunder bizarrely brings him one step closer to solving the case.
Ranjeet Rana has a bigger plan — not just stealing the Kohinoor but replacing it with a fake diamond made in Chandni Chowk to humiliate the government. On the eve of the exhibition, Jhandu Singh sneaks into Rashtrapati Bhavan disguised as a chef. In his clumsiness, he ruins the banquet by mixing salt with sugar, but in the process, he discovers Rana’s henchmen hiding in the kitchen.
After a hilarious chase through the palace — involving chandeliers falling, a scooter ride in the corridors, and Jhandu getting stuck in the President’s chair — he miraculously manages to expose Rana’s plot.
During the grand ceremony, as the PM unveils the Kohinoor, Rana’s men make their final move. But Jhandu Singh, misfiring his revolver and slipping on a banana peel, accidentally triggers a chain of events — the chandelier falls on the gang, the fake diamond shatters, and the real Kohinoor rolls safely into Chhotu’s hands.
Jhandu Singh is hailed as a national hero. The media calls him “India’s 007,” and the Prime Minister awards him a medal of honor. Jhandu, of course, takes full credit, never realizing it was mostly luck and Chhotu’s quiet help.
Jhandu Singh returns to his beat duty in Delhi, swaggering around Connaught Place with dark glasses and a toy walkie-talkie. Meanwhile, Chhotu sighs, knowing that India was saved not by skill, but by sheer Jhandupanti.