The film's plot revolves around Kanthaswamy (Vikram), who is an Income Tax officer in the CBI, and his friends, granting the wishes of the needy who write letters to a local Lord Muruga temple by disguising himself as an anthropomorphic rooster. During a CBI income tax raid, he discovers a stash of black money owned by Ponnusamy (Ashish Vidyarthi), a rich and corrupted entrepreneur. Ponnusamy pretends to be paralysed to escape the questioning. Angered by the news that her father is paralysed, Ponnusamy's daughter, Subbulakshmi (Shriya Saran) goes after Kanthaswamy to seek revenge by pretending to be in love with him. Kanthaswamy, knowing Subbulakshmi's real intentions plays along in the game. This forms a cat and mouse chase between the two. In a comical role, Thengakadai Thenappan (Vadivelu) is also sought after by a local police inspector who tries to solve the mystery of "Lord Muruga saving the people". The fate of Kanthaswamy's disguise leads into the climax of the story. Watch the full movie to know the rest of the story.