I think you're referring to a Tamil movie!
Here's a brief summary:
The story revolves around a young man named Kumar (played by Vishnu Manchu), who is a kind-hearted and honest person. He gets into trouble when he tries to help a poor family in his village, Kollimalai. The family is being exploited by a corrupt politician, and Kumar decides to take on him. As Kumar navigates the complexities of rural politics, he transforms into a strong and fearless individual, earning the nickname "Singam" (meaning "Lion"). kollimalai singam tamilyogi