Ananthan Thampy (Mohanlal) is a middle aged man who has decided never to marry in his life. He thinks he will lose all his youthfulness and manly looks by marriage. His main hobby is body building and physique maintaining. Ananthan Thampy prefers to be a chronic bachelor and hence the title Mr. Brahmachari. Ananthan Thampi is known among his friends as ''Thampi annan''. The two ever-loyal assistants Rajappan and Varadappan support him and his ideals, though secretly in their hearts, they plan to marry their sweethearts.