Mumbai Express meets with an accident, and Murthy, a crime reporter for a newspaper and his photographer are the first to arrive. Instead of gathering information, Murthy loots the dead passengers' ornaments and suitcases and gets it home to his wife, Swarajyam. The suitcase he brings home has 500 crores worth diamonds-all the assets of the Prime Minister converted into diamonds and being transferred to Hyderabad. Swarajyam discovers this, and without revealing it to her husband, she makes her own plans and their lives change with the entry of this secret and black treasure.