There are a million reviews of this movie in the Tamil blogosphere. I am not adding to them. The movie shocks the viewer, bringing him face to face with the reality he is happy to deny.
The movie's two main characters are Rudran, the aghori ascetic and Thandavan, the beggar mafia don. Thandavan sustains the body of the beggars, but destroys their soul. Rudran, on the other hand destroys the body and frees the soul. May be that is the meta movie writer Jeyamohan (on whose novel a part of the movie is based) talks about. Or may be it is the imagination of my messed up mind. The movie is guaranteed to mess up your mind for atleast a few hours. If you are ready for that, do see the movie.