Murugesan, a hawker, and Thulasi, the daughter of a rich landlord, fall in love with each other. Problems ensue in their love life when Thulasi's uncle Aiyyanar comes to know about their affair.

Kozhi Koovuthu is set in a village background with the character Kumaresan (Ashok) playing the lead role. Kumaresan earns his living by selling chicken in his village. Thulasi (Shija Rose) is the daughter of the rich landlord of the village. They meet together once and they fall in love. Now, both of them want to live their lives together, but their societal status is against them. The family members, especially, Thulasi's uncle (Bose Venkat) are the main source trouble for the lovers. Can Kumaresan and Thulasi join hands together for a happy life despite all the hindrances?—COMMON MAN