Selvam and Bhaskar, two thieves with good intentions, hide with the help of Radha who is an illegitimate child living with his father's family in the guise of a maid.
To obtain the "nagmani," a group of girls attacks a cobra pair. Unfortunately, the male cobra dies, and his partner escapes. Infuriated, she decides to take revenge.
A modern man, Vijay, marries his father's sincere secretary who hails from a poor family. But their stringent prenuptial agreement grants him the power to end his marriage after 12 months.
