Unni, who his family thinks is an NRI, is actually a smuggler known as Walayar Paramasivam. Problems arise when his finance finds out his identity and his brother becomes a police officer who is in pursuit of Paramasivam.
Chanthu posts fake love letters to an imaginary girl Vasumathi, so that his landlord's daughter Indira who is in love with him won't pursue him. Things go awry when a real Vasumathi receives the letters and start looking for Chanthu
Two strangers pretend to be husband and wife in order to use a pre-reserved ticket bought from a scalper to get on a train , because of last second plans ,find that their lives intersect and later fall in love.