Kokila is a timid girl who is struggling to find a job. To make matters worse, her mother is diagnosed with stage two lung cancer. Desperate, Kokila eventually works for a local drug smuggler Mohan in order to finance her mother's treatment. However, she becomes worried after an honest police inspector is transferred to the area and starts to investigate Mohan's underground businesses. Mohan attempts to rape her, but she brutally beats him up before escaping. Mohan's boss, Bhai from Mumbai, blackmails Kokila to continue his drug smuggling or else her entire family will be killed. With the help of her neighbours Sekar and Lakshman Kumar, who are in love with her and her sister respectively, Kokila's family smuggles the remaining drugs across the city to Alphonse, Bhai's biggest client. The rest of the story is about how Kokila and her family escape the mafia.