The story revolves around a teenager from a conservative family who struggles to strike a balance between societal expectations and personal desires. According to the popular adage, Achcham (Fear), Madam (Innocence), Naanam (Coyness), Payirppu (Chastity) are the four "ideal" qualities that every good Tamil girl must possess.

Ajay (Siddharth) comes to Kasi, where his thoughts and ideas on life and death undergo a sea change after he meets a young boy. He relocates to Chennai and stays in a house owned by a couple S V S Murthy (Mouli) and Jayam (Geetha). They treat him as their own son. A do-gooder, Ajay with his jovial nature wins the heart of all those whom he comes across. Vidya (Nithya Menen), a photo journalist meets Ajay and falls for his good nature. Ajay with the help of Vidya even gets street children obtain sponsorship for their education. But things take a turn when Vidya expresses her love to Ajay. He quietly walks off the place and decides to leave Chennai. But a rude accident to Vidya puts the responsibility on Ajay's shoulders to get her back to health. He takes her to USA for a surgery. Meanwhile a flashback reveals that Ajay was a successful doctor in the United States and who led a happy life.

A man loves a woman even though she is three years older than him. Although she reciprocates initially, the age difference and his past with a classmate lead her to break up with him.

College friends Siddhu and Madhumati part ways due to a misunderstanding. Although they are in love and realize they cannot live without each other, their egos prevent them from uniting.