Sadaa Suhagan is a family romantic drama. The movie follows the story of Raj Shekhar (Jeetendra) and Lakshmi (Rekha), who have an emotional baggage due to the uncertainties in their families. Later, Raj Shekhar becomes a strict man who is focused only on his work, while Lakshmi is a devoted housewife. Their upbringing makes their children disciplined yet loving. However, when the children grow up, they turn rebellious. How the couple make things right and get their children on the right track forms the rest of the plot of the movie.