Nandha returns after serving his term for killing his father. Although he killed him to save his mother, she does not forgive him. He is then taken in by Periyavar, who shelters Sri Lankan refugees.

In the 1930s, during the British Raj, Analeesan "Eesa", a former soldier of the British Indian Army called Captain Miller, is on a mission to protect the people from the British after witnessing an atrocity.

Rajini transforms between woman by day and man by night, hiding this gender swap from partners creating tangled complications.