It is basically an investigative film as CBI officer Kasi Viswanath (Vijaykanth) is entrusted to investigate the mysterious disappearance of Judge Sadasivam (Nassar). The Kasi Viswanathan team comprises junior officer Kesavan Nair (Anad Raj) and a constable (Pandiaraj). Soon Kasi finds out that a state minister Elakyam (Prakash Raj) is behind all crimes in the city and he is assisted by three senior cops. Suddenly one by one the bad cops are killed, with needle of suspicion resting on Kasi as a look-alike is behind the murders. It is revealed that it is a revenge killing by Perarasu (Vijaykanth), Kasi’s twin brother. We are told in a flashback by the family retainer (Chandrasekhar) that Kasi was the long-lost twin brother of Perarasu and their father, the local chieftain (Sarath Babu), was at one time the king maker of Panchalakurichi.
Edward Wilson, the only witness to his father's suicide and member of the Skull and Bones Society while a student at Yale, is a morally upright young man who values honor and discretion, qualities that help him to be recruited for a career in the newly founded OSS.
Mexican beauty Camilla hopes to rise above her station by marrying a wealthy American. That is complicated by meeting Arturo Bandini, a first-generation Italian hoping to land a writing career and a blue-eyed blonde on his arm.
When the coach of the France soccer team is killed by a poisoned dart in the stadium in the end of a game, and his expensive and huge ring with the diamond Pink Panther disappears, the ambitious Chief Inspector Dreyfus assigns the worst police inspector Jacques Clouseau to the case.
Arthur is a spirited ten-year old whose parents are away looking for work, whose eccentric grandfather has been missing for several years, and who lives with his grandmother in a country house that, in two days, will be repossessed, torn down, and turned into a block of flats unless Arthur's grandfather returns to sign some papers and pay off the family debt.