Inspectors Arjun Singh and Pyare Mohan Bhargava share a friendly bond. Arjun is unmarried and some petty comments are made about his age, while his sister Seema is dating Pyare. Zorawar Siddiqui, a smuggler, works under the cover of being a sculptor in a hotel. Zorawar gets rid of Madhu, an eyewitness who is spying him. Madhu's friend Neha witnesses her murder and calls the police. Arjun arrives there and he takes her to Pyare's house.
Bade Miyan and Chote Miyan are petty thieves and doppelgängers of Arjun and Pyare. Bade and Chote arrive in town and confusion ensues when every crime they commit are blamed on Arjun and Pyare. Things go further downhill when Commissioner Shyamlal is also thrashed by Bade and Chote. Seema and Neha also mistakes Bade and Chote for Arjun and Pyare. Arjun and Pyare land in trouble when Zorawar kidnaps Seema. They are arrested, but get saved by the arrival of Bade and Chote, who reveals their acts and promise to get Seema back.
They arrive at Zorawar's hideout and stall them while Arjun and Pyare arrive with the police force and everyone at the hideout is arrested. Bade and Chote leave after apologising to Seema for the confusion. Zorawar's henchmen hijack the police van, which is taking him and his associates to prison. They are stopped by Bade and Chote, asking for a lift. Chote realises the truth and gets Zorawar and his men arrested. Arjun and Pyare are criticised for their mistake regarding the van's hijacking and Bade and Chote are given a job in the police force. Arjun and Pyare end up being demoted as traffic officers, while Bade and Chote take their place as Inspectors.[5]
The music album of the film, composed by Viju Shah with lyrics by Sameer, released on 25 August 1998.[6] Similar to Shah's prior compositions for films like Mohra and Gupt that became popular, the album showed his offbeat mode of music yielding the tuneful numbers like the title track "Bade Miyan Chote Miyan", the zippy bhangra number "Makhna" and the groovy "Kisi Disco Mein Jaaye".