Kasethan Kadavulada is a Tamil language comedy film starring Muthuraman

R. Muthuraman

R. Muthuraman was an Indian actor who has performed in Tamil language films. He was a leading actor during the 60's and 70's and was fondly called Navarasa Thilakam. He has paired with all the leading heroines of his time and acted in over a hundred films. Muthuraman's son Karthik Muthuraman is...

, Thengai Srinivasan

Thengai Srinivasan

Thengai Srinivasan was a Tamil film comedian popular in the 1970s and 1980s. He has been given the title Thengai after he acted as a coconut-seller in the drama Kal Manam, staged by actor K. Kannan. Though basically a comedian, he proved himself an all-rounder by excelling in roles other than...

, Srikanth

Vennira Aadai Srikanth

Sreekanth is a veteran Indian actor who has performed in Tamil films since the 1960s. He made his acting debut in the 1965 Tamil film Vennira Aadai directed by Sridhar...

 and Lakshmi

Lakshmi

Lakshmi or Lakumi is the Hindu goddess of wealth, prosperity , light, wisdom, fortune, fertility, generosity and courage; and the embodiment of beauty, grace and charm. Representations of Lakshmi are also found in Jain monuments...

 in the lead roles and Manorama

Manorama

Manorama is a veteran Tamil actress who has acted in more than 1500 films, 1000 stage performances and a few television serials. She is affectionately called Aachi by the South Indian people...

 and Venniradai Moorthy

Venniradai Moorthy

Venniradai Moorthy is a Tamil film comedian. He has starred in many Tamil films and television serials as a comedian and also essayed supporting roles. He is lawyer by profession and holds a B.L. degree in addition to being a self proclaimed astrologer. He is also a well known script-writer...

 in supporting roles. The film was a low-budgeted film of the time and is perhaps best known for Thengai Srinivasan dressing up as a fake saint, making a lot of situational comedies along with it.

Plot

Parvathi (Manorama) is an extremely domineering second wife to Sivaswamy (Vennira Aadai Moorthy) and controls all his money treating him with scorn and disdain. When Sivaswamy's son Ramu (Muthuraman), son of his first wife, requires a sum of Rs. 3000 for his Sister's husband, she refuses instantly. With plenty of worry, Ramu and his cousin Shekar hatch a plot with Appaswamy (Thengai Sreenivasan) who pretends to be a fake swamiji in order to get to her money safe and steal a sum of Rs. 50,000.

Meanwhile Rama (Lakshmi) is an orphan whose only friend is the doctor of a mental institution. When Rama wants a conduct certificate, the doctor bungles and hands over the certificate of a mad girl. Rama arrives at Parvathi's house to work as a secretary and Parvathi sees the certificate and decides to keep Rama at her house to humour her fearing her insanity.

The film leads to plenty of humorous and ancedotius situations.