Smile) is a 1971 Indian Tamil-language buddy drama film directed and written by K. Balachander.

As time passes, Rajan, Rajbabu and Mandiramoorthi become corrupted in their pursuit of a materialistic lifestyle while Sathya vows to remain a righteous person.

He meets Kanchana, a helpless young woman who has been raped and impregnated by a rich predator.

Sathya's friends ultimately realize their folly and publish Rajbabu's book with the title Punnagai.

[3] According to historian Randor Guy, the film was not a commercial success, but was considered a classic by critics.