Mawaali is about Nisha Verma who lives with her father, aunt and her aunt's son. Her aunt plans to get married Nisha to Ranjit, his son. But Asha falls in love with Ramesh, the engineer. Ganesh is wrongly charged for Nisha's father's murder case and imprisoned. What happens next? Does Ramesh prove himself as innocent? Who is the real culprit? forms the rest of the story.