A mother's vow) is a 1987 Indian Tamil-language legal drama film[1] written, directed, scored and produced by T. Rajendar.

He appeared in the lead role with Srividya, whilst the film featured an extensive cast, which includes Rajendar's son Silambarasan.

SR is a successful criminal lawyer who consistently wins his cases by manipulating court proceedings to his advantage.

In one such case, he conspires with some criminals to frame an innocent man named Thyagarajan for murder, resulting in his death penalty.

Rajkumar takes on a case defending an innocent doctor, Subhadra, who was framed for murder by SR's associates.