Pinnilavu is a 1983 Indian Malayalam-language drama film directed by P. G. Viswambharan and written by Thoppil Bhasi, based on the story of the same name by C. Radhakrishnan. It stars Madhu, Srividya, Mammootty, Mohanlal, Poornima Jayaram, Mukesh, Maniyan Pillai Raju, and Sukumari. The music was composed by Ilaiyaraaja. The film is about a fight of ethics between a father and son.
Kesava Panickar (Madhu) is an honest government engineer who assiduously resists any offers of bribes. His only son Govindanunni (Mammootty) gets selected for MBBS, for which Panicker is too proud of. Unni is in love with Parvathi (Poornima Jayaram), and their marriage is almost fixed by both the parents. But changes are seen in Unni after he joins the college. Getting into bad company consisting of spoiled brats from rich families, Unni turns to alcohol, grass and porn, and stops attending his classes.