Kamali (Devayani) lives with her sister and brother-in-law in Ooty and is searching for a job. While in Madras, her purse is stolen and she fears she has lost her university certificates. Suriya (Ajith Kumar) who works in Jaipur finds the purse and sends

Krishna (Ajith) belongs to a middle-class family, where his father is a womanizer and brought up Krishna as a good for nothing fellow. Krishna is also a youngster who likes to waste time his time, by hanging out with his friends and roaming behind girls.

The movie begins with Selvam (Nandha Durairaj) coming to Chennai. After a quarrel with a person, he suffers an injury on his head and he forgets all about his past. Selvam rushes to a hospital where he seeks the help of Dr. Lakshmi (Ranjitha). Dr. Lakshmi assigns Dr. Thendral (Uma) to treat him back to his normal self. Selvam does not even remember his name so he is christened as Kannan by the doctors of the hospital. Thendral falls in love with Kannan and expresses her love for him. A couple of incidents helps Kannan to know about his past and he returns to his village. He meets his parents and his fiancee Jyothy (Vani) waiting for his return. What transpires later forms the crux of the story.

Asha, a young woman belonging to a middle-class family, tries to change the arrogant and rich Arjun into a responsible person.