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
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.
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.