In Harihar Nagar movie revolves around Mahadevan (Mukesh), Govindan Kutty (Siddique), Appukuttan (Jagadish) and Thomas Kutty (Asokan) who are four young men enamoured by lovely Maya (Geetha Vijayan), the next door neighbour of Mahadevan. Maya is in town to investigate the mysterious circumstances surrounding the death of her brother. The movie revolves around the antics of these four to win Maya's heart. It also explores the past of the central characters. Towards the end, John Honai (Riza Bava) who is a man with some dark secrets, appears.