Cast: Mohanlal as Jayaraman, Samuthirakani as Vasudevan, Anusree as Ganga, Vimala Raman as Devayani, Baby Meenakshi as Nandini, Ranji Panicker as Padmakumar, Chemban Vinod as Anandhan
Jayaraman is a blind man who has a heightened sense of smell, touch, and hearing. He works as a lift operator at an apartment building in Kochi where retired Supreme Court chief justice Krishnamoorthy lives. Jayaram is very loyal to Krishnamoorthy and accompanies him often. On one of the trips, Krishnamoorthy reveals to him that once he imprisoned an innocent man named Vasu whose family poisoned themselves unable to cope up with the news. He also tells him that Vasu who is vowed to take revenge is now released and is a threat to his life and his family.
Krishnamoorthy has a young daughter, Nandini, who is sent to a convent school to keep her away from any danger. Nandini's only link to her father is Jayaraman who visits her with gifts from her father. Krishnamoorthy opens a bank account for his daughter and asks Jayaraman to transfer the money. Fearing that it might leave hints about Nandini's existence, Jayaraman withdraws the money and gives it to Krishnamoorthy. But the transaction is seen by Devayani, a maid who works in the apartment.
Krishnamoorthy gets killed and Jayaraman gets charged of the murder and theft. After the is beaten up police, Jayaraman manages to escape. He tries to hide Nandini with the help of his friend Ganga who is a police officer. He reveals to Ganga that Nandini is actually Vasu's daughter. Vasu anyhow finds Nandini, but with a brilliant move, Jayaraman manages to shoot down him. The film ends when Jayaraman adopts Nandini as his own daughter.
Oppam which marked another collaboration of the evergreen director-actor duo Priyadarshan and Mohanlal was a huge hit at the theatres. The film won average critical reception at the box office and was remade in Kannada.