Chantabbai is action comedy based movie in which, Panduranga Rao (Chiranjeevi) who likes to be known as 'James Pond' is a bumbling private detective working for a Private Detective Agency.
Bowled over by her innocence and good nature, Pandu falls in love with Jwala (Suhasini Mani Ratnam) who works as a telephone device cleaner for various businesses.
Oneday Jwala is accused of murdering a businessman for diamonds and arrested, Pandu gets her out on bail and eventually finds out that his own boss (Raavi Kondala Rao) was the murderer and sends him to jail.
Impressed by this, Jwala's friend, Dr. Nischala (Mucherla Aruna) requests Pandu to investigate and bring back her long last brother who was born out of wedlock to her father (Kongara Jaggayya).
After some investigation Pandu introduces a young man (Chandramohan) as Chantabbai- the lost son. But another young man (Sudhakar) shows up as Chantabbai.
The rest of the story is all about how Pandu solves the case and finds the real Chantabbai.