Under Captain Herman, work for each mouse-sailor is more like play. But the fun ends when they bring aboard a castaway who turns out to be Katnip the Pirate.
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.
Two small boys are playing in a wood. The younger boy has a revolver and, not understanding that the gun differs from his toy pistol, plays 'highwayman' on the road and holds up a cyclist; the gun goes off, killing the cyclist.
Ethirpaaraathathu narrates the story of star-crossed lovers Sundar (Sivaji Ganesan) and Sumathi (Padmini) in whose house Sundar, a college student, lodges.