Kannan and Dass are two famous rowdies in their village. Dass has a sister called Uma with whom Manikkampillai (shortened as ‘Mapillai’) is in love but she is not interested in him. Mapillai joins Kannan’s and Dass’ firm KD & Company as the manager, in an attempt to win the love of their sister. KD & Company once keeps as hostage a music troupe who comes to their village to perform. The main singer of that troupe, Sangeetha gets expelled from her home because of this and so Kannan and Dass gives her refuge upon insistence from Uma. Meenakshi is the childhood friend of Kannan with whose father, both Kannan and Dass has enmity.

Gopikrishna (Murali) owns an old bus which was received as compensation for his father’s road accident. Gopi is now facing lots of consequences due to the bus’s pathetic condition. He had sold many valuable things to maintain this bus, and his friend Azhagu (Vadivelu) was his only companion and the bus’s cleaner. A mouse had eaten Azhagu’s passport and spoiled his chances of going abroad. Some part of the film’s comedy involves Azhagu running behind the mouse for revenge. A live TV show in which Gopi insults the City Traffic Commissioner (Vinu Chakravarthy) lands him in more trouble when the latter commands Gopi to leave the city with the bus. His other friends, advocates, and well-wishers try to help him with a bank loan to run a mobile kitchen (Tattukada) from his bus. The plot took a turn when a girl named Vasanthi (Radha) enters the bus as a nomad, but she was actually Gayathri, the daughter of an influential and politically powerful minister (P. Vasu) in Puducherry.