While searching for his lost daughter Mitil, Inspector Som reaches out to Euthansia band singer Vaidehi to sing her song in a concert. Can she keep the promise?

Som feels all hopes lost, as he gets wrongly accused for being the reason behind Vadehi's sudden death.

Som is accused for being the cause of Mitil's disappearance. A heartbroken Som is also given the job of investigating Vaidehi's death.

A candle march is held as a tribute to Vaidehi; her band members are thoroughly devastated. Is this the end for the team?

Situations complicate further when Som asks the rest of the band members to assemble at Vaidehi's place for an interrogative session.

Som reaches an asylum to connect all the dots he has gathered over the past weeks, only find Vaidehi's mother there.

While Euthanasia is about to make a comeback with a new vocalist, Som has reached the conclusion of his investigation about Vaidehi's death.

Somnath Maitra starts investigating Vaidehi's death along with the new police officer who happens to be his ex lover Anuradha Mukherjee. It is from Vaidehi's song they find out a hidden clue.

Somnath and Anuradha realise that Sudip Chatterjee, the manager of the pub, is eavesdropping on their conversation. On further investigations, they find out that his son Rik too is involved.

Somnath and Anuradha visit the hospital to inquire about Vaidehi's post-mortem. They don't find anything until the doctor who did Vaidehi's autopsy calls Somenath at night and reveals a dark secret about her.

Probhakor, the manager of the Black Sea Pub gives leads about an underground racket. Somenath and Anuradha tries to find out the source, only to come across yet another brutal accident.

Digging deeper, Somenath and Anuradha find a photograph which brings all the loose ends together. They realise that Sudip Chatterjee, Diganta, Promotho share a common connection with someone actually close to Vaidehi.

Together, the duo confronts Rik, who turns helpless. At the Ganga Ghat, Somenath faces a terrible danger. There's a another clue unraveling from the photograph.

Vaidehi's story is unraveled. The seed of her disaster was that, Vaidehi was having an impossible affair with a person who apparently was not the father of the child she was pregnant with.

The kingpin of the underground racket is located. Uglier things start surfacing up from the past, as Vaidehi's murder is finally resolved.