Kumaravel (Vijay Sethupathi) is a typical lower middle class youth who mainly lives in TASMAC bars. His friends and neighbors have nicknamed him Sumaar Moonji Kumar (average-looking Kumar) alias SMK, and he is stalking Kumudha (Nandita), the girl staying opposite to his flat. It is a one-way love. Kumudha's father (Pattimandram Raja) has sought the help of Annachi (Pasupathy), the local boss, to find a solution and teach SMK a lesson. On a parallel track, another alcoholic named Balakrishnan (Ashwin) is a smart bank salesperson but is always under pressure from his boss Poochandi (M. S. Bhaskar) and possessive girlfriend Renu (Swathi). One night, the life of the principal characters gets entangled, leading to the climax.