The story revolves around Petthaperumal and Paandi in the village of Maaviduthukotai, Sivangangai. They both are a happily married couple for some time until the pressure of conceiving a baby falls on them and thereafter affect their emotional and physical bond. The societal stigma of not conceiving a baby is thrust on a woman. The fake masculine identity crisis thrust on a man. How as a married couple they overcome the society burden of back biting and the shame through various pressures from the closed circles to the outer circle. The heat cold and finally the rain of love unfolds in this movie Veppam Kulir Mazhai..
Balaji and Karthik are brothers. Unable to bear the torture of her husband (Jyothi), their mother commits suicide. Balaji being the elder one, takes care of his brother Karthik(Nani). Their well being is ensured by their neighbour who is a hoarding painter. Karthik grows up with Revati(Nitya), the daughter of that painter. Jyothi who is a broker and runs a prostitute house wants Karthik to handle his business. But Balaji keeps Karthik and Jyothi away. Vishnu who is the son of a mechanic is Karthik's best friend. He falls in love with Veena(Bindu Madhavi) a prostitute in Jyothi's business. To get Veena out of Jyothi's prostitution business,Vishnu agrees to deliver a drug packet given by Jyothi.He seeks his best friend Karthik's help in this operation. The rest of the story is on how Jyothi plays games with Karthik's life and how Balaji confronts him to save his brother..
