The night after the Japanese bombing of Madras, Rajan (Sivaji Ganesan) a radio engineer, is murdered while preparing to leave town with a bag full of cash. A police detective Sivanandan (Jaavar Seetharaman) investigates the case and finds each of his suspects coming up with a different retelling of the events of the night of the murder. A brisk, atmospheric film, brilliant for its time and given that it was made in the constraints of the Madras studio system that experimented with little outside of mythological epics and social dramas.