Thandatti is a 2023 Indian Tamil-language comedy drama film written and directed by Ram Sangaiah in his directorial debut.

The film begins with a police operation, where Constable Subramani, known for his hasty decisions, shoots a criminal when he tries to escape, earning the wrath of his superiors.

While the other officers are reluctant about helping Selvarasu due to bad experiences with the villagers, Subramani volunteers to take up the case.

Now all that she is left with is her solid gold ear piece, called "thandatti", towards which Thangaponnu has an emotional attachment.

Thangaponnu is taken back home, forcibly married to another man without her consent and shown to have lived with Veera's memories all her life and has safeguarded her precious thandatti.

Selvarasu is heartbroken, and coaxes Subramani to accompany him to their village, so that Thangaponnu's children don't create ruckus till her funeral is over.

At the village, Subramani realizes that Thangaponnu's daughters and her alcoholic son are only focused on how to usurp her last piece of belonging, the thandatti.

A huge fight ensues with all the daughters and son's families blaming each other for the theft, and Subramani is left with a mammoth task to fend for himself and calm down the crowd, as well as to find the missing thandatti.

In the midst of all the commotion, an officer from a life insurance company arrives as a saving grace, and reveals that Thangaponnu's policy has matured, thereby releasing a large sum of money to be shared among all her children.