Bahut Hua Sammaan

Two men quarrel over a dented car, and in a moment of anger one breaks the other's window. They end up fighting in a comically eccentric way that draws attention away from their real plan. The owner of the damaged car reveals a bag, and the pair slip away, signaling they intend to steal it undetected.

The duo later sells the stolen bag to Chandu, a college con man with connections. Chandu introduces them to a wider network and hints at bigger opportunities. The pair realize they could pull off a much larger theft if they play it smart.

Fundoo and Bonny miss their final year and attend a party thrown by the college to celebrate the graduates. Their envy toward the successful peers grows, and they cross paths with Baba, who casts himself as a Robin Hood figure. Baba persuades them to risk it all for a major bank heist.

Baba convinces the duo to rob a branch of the college bank and gives them a map to the target. He specifically mentions the locker room, hinting at valuable cash and jewelry hidden inside. The plan shifts from a small bag theft to a high-stakes heist.

They brainstorm several approaches before settling on entering through water pipes beneath the locker room. A machine would cut through the steel flooring to gain access. They also recruit Chandu for extra manpower, but ultimately decide to proceed on their own after initial mockery.

Chandu arranges a 24-hour water cut, but the supply lasts only 8 hours. When Fundoo and Bonny attempt entry, the water returns and they push forward anyway. They find PMS inside with police officers and discover several lockers broken; the raid ends with their arrest.

Fundoo and Bonny are interrogated by Officer Bobby, who identifies them as the robbers from security footage. She tortures them with a pulley-lever device she built, a skill she learned as a fellow mechanical engineering student. The interrogation reveals the basic plan and who was involved.

Netaji links up with Baba Ji of Akhand Bharat Sansthan, who warns that a tainted reputation could jeopardize his political career. Baba promises to help and hires ex-commando Lovely Singh to track the Kohinoor and counter the plot. A more ruthless pursuit is set in motion.

Security footage identifies Bhola and Raju as the robbers, and Chandu is arrested but denies knowledge of the plot. The investigation tightens around the gang and starts to trace the connections to Sapna's farmhouse. The tension builds toward a confrontation.

Baalu Bhaiya, the gang's boss, orders his men to locate Bholu and Raju and capture Sapna. The trio reaches Sapna's farmhouse; a gunfight ensues and the bag is dropped amid the chaos. Sapna escapes with the bag, and the chase continues.

Lovely reaches Sapna, questions her, and checks the bag for the Kohinoor. Finding nothing, he arranges a meeting with Raju and Bhola and tapes the call. Sapna is killed by Lovely after sharing the critical information.

Fundoo and Bony finally obtain the Kohinoor diary, which reveals bribes and a chemical formula. They hand the diary to Bobby, who then questions PMS to discover the lab location, exposing Akhand Bharat's corruption. The investigation intensifies as the pieces start to fit together.

Bobby and PMS guide the search to the Akhand Bharat lab in Gorakhpur. Fundoo, Bony, and Baba reach the lab, where a toxic biochemical is released and causes hallucinations. Baba arrives just in time to kill Lovely and save them, cementing his revenge. The operation ends with the villains exposed and the players reconsidering their futures.

The nefarious deeds of Akhand Bharat Sansthan are exposed; Baba is hailed and then jailed. Bobby agrees to use Baba as a sperm donor after the events unfold. Fundoo and Bony end up wealthy after a clever short sale on Akhand Bharat shares. The film closes with Baba, Fundoo, and Bony relaxing by a pool.

Bobby delivers a baby girl, signaling a new beginning amid the fallout of the corrupt empire. The trio reflects on their fortune and the new life ahead, having survived a web of crime and conspiracy. The closing image is of friendship, luck, and a moment of rare peace beside the pool.