Baankey Ki Crazy Baraat movie is based on the concept of Proxy Wedding, where the boys families deceive the girls families, in case the boy is not good looking or has a dosh (fault) in his kundali.

They hire a ‘proxy’ groom who participates in all the rituals at the wedding and when the girl reaches her in-laws house, she comes to know that the boy during the wedding was changed. The practice is commonly known as Proxy Wedding.

Baankey (Rajpal Yadav) a goofy, hyper boy-man is desperate to get married. He is in his mid 30’s and cannot get married due to a 'dosh' in his kundali. His wily chacha Kanhaiya Lal (Sanjay Mishra), a shrewd moneylender, along with his friend, Lallan Bhaiyya,(Vijay Raaz) a village goon, then concoct a plan to get a proxy groom for Baankey's wedding.

The proxy groom, Rajesh is thrilled to land up with this project where he is promised a lakh of rupees, to be a proxy groom for two days.

On the day the baraat is about to board the bus, Rajesh does not show up. What happens after that is a roller coaster ride in a crazy baraat.