Balettan is the story of Athaniparampil Balachandran (Mohanlal) who is known for his service in the society. His father (Nedumudi venu) is a retired postmaster. He lives with his wife Radhika (Devayani) and two children. C
Vinayakan, who has hearing and speech impairment, is in love with his childhood friend, Ammu. But Vasavan, a gangster, poses a threat to their relationship as he lusts after Ammu.
Manu and Meenakshi are in love. Meenakshi was raped by R.K. Nair, the employer of Manu's father. Manu's father, to save his master, took the blame upon himself. Manu decides to deal with R.K. Nair.
Satya Murthy, a college professor, gets brutally killed in front of his students. Problems arise when Jaya Chandra, a police officer who investigates the case, befriends the murderers.