Isaac is given the condition that he can only marry his girlfriend, Annie, if he passes his SSLC exams. However, things take a turn when another man sets his eyes on Annie.

A foreigner runs a drug racket on the beach with help of locals and the coast guard.

Babu has learned and perfected the art of being a clown and is promised the hand of Kamala, the circus owner's daughter. He loves Kamala, but Sudheer Misra's arrival in the troupe changes everything.

This is a film on moral policing. When this film was produced, the term `moral policing' was not in the public use by the activist circles or intellectual circles. It was produced in 1993. Perhaps, the film was a bit ahead of its time . More and more cases of moral policing were discussed decades later.. The victims and survivors of moral policing in India include women, religious minorities, sexuality minorities, Dalits, Adivasis, marginalized nationalities, marginalized linguistic cultures, marginalized regions and marginalized skin colours in India. Ilayum Mullum is based on certain real incidents that took place in Kerala.

CID officers Ramdas and Vijayan go to Kerala to find the murderer of a police officer. While doing so, they face a dangerous crime syndicate that deals in drug trafficking.

Brokers, Freddy and Nicholas, try various ways to make money to repossess their boat from a businessman. However, they get into trouble when they resort to illegal ways to earn money.

Satyaraj and Dharmaraj, two thieves, disguise themselves as old men to escape from their problems. They join a group of old men at a resort, who have come to enjoy life for a month.

Innocent is a conman who gets payed by a associate to trick a whole town into thinking that he is an animal doctor , Dr. Pasupathy which the town president brought for the villagers.

Siddique, a local school teacher has Jayaram a street musician pretend to be a qualified band master for his school band, which leads them to tell many lies and have problems in keeping the act up.