The thaali tied by a mother to her daughter) is a 1959 Indian Tamil-language film produced, directed and photographed by R. R. Chandiran.

During a dance competition at the school function, Sundhari wins the first prize and Sundharam could not accept this as Sahadevan's family belongs to an inferior caste and indebted money from him.

To cover this up, Sundharam disposes the body into the river and cooks up a story that Sahadevan had run away to avoid paying his debts.

Kanagu and his friend Dhuraiappan leaves to Sundharam's place when they bump into an arrogant and modern girl Kaveri.

In another town, a rich landlord Arumainayagam is looking for his long lost younger brother in order to surrender all his wealth.

Sundharam learns that Loganayagam is the person but hatches a plan to get Kaveri to be married to Kanagu in order to swindle all the wealth.

Sundharam threatens by using Loganayagam's signature to prepare a letter saying that Thanabakkiam's house was burnt by his order.

Knowing this, Kanagu pretends to agree marrying Kaveri but Loganayagam who is not in favour of this becomes sick and dies on the wedding day.

Sundhari delivers a baby boy and at the same time Kaveri is sad to learn about this and as Kanagu goes missing without informing her.

A series of event occurs before the climax where Kaveri learns about Sundharam's plan to murder Arumainayagam, Balu and Gopal abducts Sundhari, Sahadevan who sees Thanabakkiam remembers his past and Kanagu escapes from the mental sanatorium.

Kaveri steers away from the road and hits a tree and her last wish is that Kanagu to save Arumainayagam and do not hand over Sundharam to the police and dies.

Balu and Gopal forcefully obtain the signature of Arumainayagam and leaves the job of murdering him to Sundharam.

The story of Thaai Magalukku Kattiya Thaali was written by C. N. Annadurai, which Rama Arangannal then expanded into a screenplay.