Ranjeet Thadani is a bored and arrogant music producer who along with his friends hosts a party every Friday where they invite an 'idiot' to ridicule them and have fun at their expense. One day, he invites Bharat Bhushan, a kind hearted yet annoying Income Tax inspector, who ends up messing things for people when he tries to help them who makes Ranjeet regret inviting him.

Good hearted but not worldly-wise, the rolly-polly tax inspector, Bharat Bhushan (Vinay Pathak) is back to fulfill his long cherished dream of becoming a singer. To further his media ambition he enters a game show hoping to win a cash prize with which he can make his own music album. Eventually Bhushan goes on to win the competition which also gifts him a free stay on a cruise ship.