The plot, as far as I remember, involves a man who pretends to be someone else or lives a double life. There might be a subplot about honesty versus deception. The title "Kambi Kottu Pachai" could be a twist on "Kambi," meaning lie, and "Kottu Pachai" which in Tamil could be translated to "fresh vegetables" or "green vegetables," but maybe there's a pun there. Alternatively, "kottu pachai" might refer to something being "green" as in inexperienced or naive. I need to check if there's a cultural reference or a play on words here that I'm missing.