Aarilirunthu Aruvathu varai, Revolves around Santhanam(Rajnikanth) who solely runs his poor family of 2 brothers and a sister, after their parents death, by taking them to higher level in the society. However, he gets rejected by them, after they get a modern lifestyle. How Santhanam, runs his life and gets back his greedy Siblings forms the Crux of the story in this Coming of age film.