A handsome newcomer in a village marries a local girl. A year or so later an abandoned baby is left on the couple's doorstep, a baby the man had with another woman.
A young woman takes up a job as a cook in a wealthy couple's residence. Her employer, an elderly man is infatuated with her, much to the dismay of his arrogant wife.
Ethirpaaraathathu narrates the story of star-crossed lovers Sundar (Sivaji Ganesan) and Sumathi (Padmini) in whose house Sundar, a college student, lodges.
The young Alberto Ruotolo leave the country cottage to go for the sharpshooter. But the command does not pull good air, three riflemen arrogant and unruly bear much disorder as anger Marshal Nero.