Fifty robberies occurred on Independence Day, with two masked robbers looting houses and stealing expensive items totalling ₹70 million. The entire police force is clueless, without the slightest lead or evidence. The police assign ACP Gayathiri to the case investigation. Gayathri learns that the 50th house belongs to her ex-boyfriend Major Chandru.

Chandru's grandmother gets injured in the theft in an attempt to safeguard the Ashoka Chakra medal, which the government bestowed on Chandru's late father. But the thieves stole the award.

Chandru joins Gayathri in the investigation to retrieve the medal and solve the case. Chandru checked the case details and information from the victims, only to realise that the robbers knew the exact location of jewellery and money in every house and swiftly carried out each robbery.

Chandru lists the people who can access the homes and discovers that a company known as 'Dial For Help' may be involved in the case. They found a recurrent number belonging to Marimuthu servicing all 50 houses. The police rush to Marimuthu's house, only to find his wife there. Marimuthu's widow explains that her husband had died two years ago. Chandru, with no other clue, returns.