Guna (Kamal Haasan) is a mentally-challenged person and receives treatment in a mental asylum. He assumes a fictitious character named Abirami and registers in his mind that she is an angel who is going to marry him on a full-moon day. On seeing his 'Abirami' he kidnaps her and hides her in a cave and tries to explain his love to her.

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A line in this song, stands out, striking a chord to the ensuing climax - "Manithar unarndhu kolla ithu manithar Kaathal alla" (translates to : "This love, to be understood by huma ...