Kaththi Sandai is the story of a farmer who becomes a Robin Hood style thief for the welfare of his village. He steals from the people who deny his village of its basic needs and uses the money for its development.

Robin Hood, a merry man who steals from the rich to give to the poor, has a new capable sidekick, Jerry. The evil king deduces, in his own words “brilliantly”, that the best way to deal with this new threat is a cat, so he hires Tom.

A CBI officer moonlights as a modern day Robin Hood in the guise of the masked Kanthaswamy, as he helps fight corruption and aid impoverished people.