By Emmy Iyer(05 May 2011)
Thirupathi movie begins with Thirupathy (Ajith) who runs a sound serviceshop and has a loving family. He happens to meet a beautician Priya (Sadha). He falls in love with Priya.
Meanwhile Thirupathy's friend Muthu (Riaz Khan) who is the son of a State Minister. Muthu uses Thirupathy as a henchman under the guise of being friendly.
When Thirupathy 's sister dies during childbirth, due to the inhuman and greedy attitude of Muthu's brother, Muthu's true colours are out. Thirupathy vows to destroy both Muthu and his brother. In trying to achieve this objective, he realizes that killing just two people will not change things.
So he plans to get a bill moved in the assembly, to declare that, all hospitals should not charge for delivery cases, even if it involves surgery. The hurdles he faces in achieving this and how he overcomes them form the plot.