The film was produced by N. S. Rajendran under Visalakshi Combines and stars K. R. Vijaya and Muthuraman, while Major Sundarrajan, V. K. Ramasamy and Sivakumar play supporting roles.

Unable to tolerate their father's control, both sons leave home, causing immense pain and worry for Lakshmi.

As time passes, Lakshmi's unwavering commitment and sacrifices gradually soften Sundaram's strict nature, leading him to introspect and change his ways.

Meanwhile, the sons navigate the world outside their sheltered upbringing, encountering hardships and challenges that ultimately lead them to appreciate the values instilled in them by their parents.

Through Lakshmi's perseverance and Sundaram's transformation, Dheerga Sumangali emphasizes the importance of family, tradition, and understanding in overcoming challenges and maintaining a strong, loving relationship.

[7] When Vani was in Madras (now Chennai) for two music concerts at a Bhajan Sammelan, Viswanathan, who was the chief guest, was impressed by her performance and gave her the opportunity to sing the song.