The movie's protagonist, played by Arivazhagan, is a complex character with a troubled past. His journey is intertwined with that of other characters, including a cunning politician and a struggling farmer. Through their stories, the film sheds light on the harsh realities faced by ordinary people in rural India.
The 2021 production is characterized by its gritty, low-budget aesthetic, a hallmark of many direct-to-digital releases that bypassed traditional theatrical windows during the post-pandemic era. The film delves into themes of voyeurism, betrayal, and the dark undercurrents of urban life. Unlike mainstream Kollywood offerings, Thiruttu Poonai leans heavily into a raw, unfiltered storytelling style that prioritizes atmospheric tension over polished production values.