Ruhaan and Ayesha, a young couple from Mumbai, are on vacation in the southern beach town of Pondicherry when they receive the shock of their lives—their two little children have gone missing from the famous Promenade Beach.

DSP Siva Raghavan, who is battling his own demons, takes over the investigation, but complicating matters is the presence of NGO worker Gayathri Meshram and ex-CBI man Girish Pradhan, who bring their own perspectives to the case.

Meanwhile, the Jan Seva Dal and its vice-president Sesh Kumar are making their presence felt in the southern state in their own way.

As the investigation leads Siva and his men to some unexpected places, will the perpetrators be found in time?

Will the two little swallows who once lived in Ruhaan's nest ever return home?