Vaishali (Sindhu Menon) is a house wife. She commits suicide in her house by drowning herself in a bath tub. ACP Vasudev alias Vasu (Adi) is given the job to investigate Vaishali`s case. Shocked to see his ex-lover Vaishali in death position, he goes deeply and investigates the case. More and more killings take place in the apartment. Vasu suspects Bala (Nandha) , a resident in the apartment.Who is the murderer?