 Mohanlal and Sreenivasen are sons of Adoor and Srividya. Mohanlal is an executive, engaged to marry Shobhana and is under pressure to take the reins of her father s industrial empire. Sreenivasen is a doctor who lives an unhappy childless life with neurotic wife Nirmala. Unexpectedly, their mother is impregnated at a late age. Mohanlal is forced to be a surrogate parent to the child, a role he takes a bit too seriously.