Mumbai Matinee is a story about Debu Chatterjee who is in his 30s and is chided by everyone he knows as a virgin. Tired of being stereotyped in this manner, he confides in Baba Hindustani and Pyarelal about his predicament and they offer to help him out with hilarious results. Then one day, while watching a movie in a theatre, Debu is shocked to see himself in an adult sex film, and this changes everything all around him.