Chikkikku Chikkikichu takes place on a moving train that commutes between Chennai and Nagerkovil.
Chikki aka Chidambaram Krishnan (Mithun) comes to the railway station to see off his friend (Aadhavan) to Nagerkovil. When the train is about to leave, Chikki comes across a beautiful girl (Mridhula) and falls head over heels with her. He quickly changes his mind and boards the train in the blink of an eye. He also manages to find a seat next to her. Initially she does not reciprocate to his antics, but slowly Mridhula also is drawn towards Chikki. When Chikki gains strength and reveals his feelings, a twist in the tale takes place. How the couple comes out of their problem forms the rest.
Mithun fits the role of a young man who falls hook-line sinker for Mridhula. He expresses his love more through his body language than mouthing heavy dialogues. The director should be commended for steer clearing from sleazy scenes despite the film being a romantic tale that takes place in one night journey. The problem with the movie is that it just revolves around the lead two characters most part of it. Hence, after a point tedium sets in. Comic portions also fall flat. On the technical front, N.S. Rajesh’s cinematography warrants mention. His lighting and compositions inside a moving train is a major plus to the movie. Two of the songs by Vijay Benjamin are breezy.