Passenger movie is based on two characters, who never had anything to do with one another, come into each other's lives and what all things happen consequently.
Sathyanath (Sreenivasan ) who works in a private company, has some strange habits He travels from his native town to Kochi (where he works) by train. The moment the train crosses a bridge he dozes off. And he wakes up at a particular point. All this happens with utmost precision, as if programmed by someone.
Nandan Menon (Dileep) who is an advocate, always stands for truth and justice. He respects the law and always thinks of the welfare of the people around him.