Exploring a humour crime genre,Chaalis Chauraasi is like a rollercoaster ride in an amusement park,except that it takes place in a police van.The story of the film revolves around 4 cops Pankaj Suri aka Sir (Naseeruddin Shah),Albert Pinto aka PINTO (Kay Kay Menon),Balvinder Singh aka Bobby (Atul Kulkarni) and Shakti Chinappa aka Shakti (Ravi Kishan); who see an opportunity to a great future when they are given a mission to pull off.