The film explores the complicated love triangle between the characters played by Nedumudi Venu, Mohanlal and Menaka. Appunni and Ammukutty are lovers from childhood. Ammukutty's father Ayyappan Nair arranges her marriage with a rich school teacher, Menon Maashu. Ammukutty is happy to end her relationship with Appunni and marries the rich and modern Menon Maashu.
However, Menon Maashu fails to arrive on time for the marriage. Ayyappan Nair, who thought that Menon Maashu might have cheated his daughter, conducts Ammukkutty's marriage with Appunni. But, Menon Maashu arrives late at night, and now Ayyappan Nair wants Ammukutty to marry Menon Maashu. Shaken by the behaviour of her father and Menon Maashu, Ammukkutty closes the door in front of them and decides to live with Appunni.