The film stars Prem Nazir, Jayabharathi, KPAC Lalitha and Pattom Sadan in the lead roles.
On his rounds as a postman, Rajan meets Sharada, the daughter of a widow who lost her son with no knowledge of his whereabouts.
Sharada works in a school owned by Sreedhara Menon whose son, Ravi hears her singing one day and compliments her.
She then reveals to him that Jyoti had denied his marriage proposal so that Ravi would marry Sharada on the advice of her brother Rajan.
The music was composed by Shankar–Ganesh and the lyrics written by Mankombu Gopalakrishnan, Vayalar Ramavarma and P. Bhaskaran.