The film unfolds in a village in Thirunelveli. Ramasamy (K. Balachander) is an influential man in the village, and he is a devoted to the principles of Congress since his childhood. He is against Singaravelan (Bharathiraja), a Communist. Their feud runs for over four decades. Even their grandchildren are against each other and they form gangs to express their enmity. However, a romance in the family changes the warm atmosphere. Susheela (Anjali), brought up in Singaravelan's house, is a school teacher who is in love with Murthy (Aari Arujunan). Understanding their true love, the children forget their enmity and try to bring both families together and get them married. Whether they succeed in their attempts forms the climax.
The film had a huge hype prior to its release due to Tamil cinema veterans, K.Balachander and Bharathiraja, coming together for the first time together in a film. The film received poor reviews for its mediocre script, amateurish screenplay, acting and non-existing entertainment factor.[2][3] Sify labelled it as "a big bore", and The New Indian Express called it "Fairly neatly crafted, Rettai Suzhi is a clean, simple, warm entertainer sans overt glamour, double entendres or mindless violence".[4][5]
