Venkat Ramakrishnan (Srikanth), Sevarkodi Senthil (Jiiva) and Panchavan Parivendan (Vijay) are three engineering students who share a room in the hostel of Ideal Engineering College (IEC), Chennai. Venkat, who hails from a middle class family, wants to be a wildlife photographer, but is studying engineering because his father wants him to be an engineer. Senthil, hailing from a poor family, is studying engineering to raise his family's fortunes and get them out of poverty. On the other hand, Pari is studying engineering for his simple passion in machines and devices. Pari believes that success in studying is not achieved by solely memorizing definitions given by textbooks or professors, but by understanding and applying the concepts. He believes that one should follow excellence, not success, as success will come itself if excellence is followed. However, this different approach is sneered upon by the faculties, including the dean of the college, Professor Virumandi "Virus" Santhanam (Sathyaraj). Virus and the faculty favour Pari's classmate Srivatsan (Sathyan), also known as "Silencer", who is the complete opposite of Pari, believing in mindless memorising over understanding, in order to reach his goals of corporate and social status. Pari constantly spars with Virus and Srivatsan due to their differences in their educational approaches. Pari also believes in the concept of "All Is Well", in which people should focus on the present and live it as it is, instead of worrying over the future as in the case of Senthil, who constantly thinks of the fate of his unmarried elder sister and his paralysed father.