 Murli Prasad Sharma is a local goon in Mumbai popularly known as  Munna bhai . He has kept his real identity secret from his parents, who think that their son is a doctor. Munna s parents arrive in Mumbai for their annual visit and his father meets an old acquaintance Dr. Asthana by chance. They want to fix Munna s marriage with Dr. Asthana s daughter Suman "Chinky" Asthana. But Dr. Asthana comes to know about Munna s real identity, reveals it to his parents and humiliates them. Heartbroken, they leave for their hometown. Munna swears revenge upon Dr. Asthana and embarks upon getting an admission in a medical college to become a doctor.